zuko x fem!reader where they are together, but the reader can't helo but feel that he has smth towards katara on the mission, smth inspired by "lacy" by olivia rodrigo
Lacy
Pairing: Adult! Zuko x Reader
Summary: Katara has always been everything you think you'll never be. As jealousy slowly twists love into self-doubt, you're left wondering if the Fire Lord's heart was ever truly yours to begin with.
Word Count: ~9k (estimate)
Warnings: jealousy, insecurity, low self-esteem, angst with comfort, established relationship, emotional hurt/comfort, happy ending
Author's Note: okay... this one hurt a little 😭 it's heavily inspired by lacy by olivia rodrigo (if that wasn't painfully obvious lol). while i was writing this, i actually had a few tears roll down my face because i could relate to that feeling of constantly comparing yourself to someone who seems so effortlessly beautiful, kind, or perfect. thankfully not the relationship part 😭 just the insecurity and the whole "why can't i be like her?" mindset. anyway, i hope i did the song justice. as always, constructive criticism is more than welcome :)
The Fire Lord's study is warm with the glow of late afternoon sunlight filtering through paper screens, and you should feel at home here. You do, usually. But today, sitting across from Zuko as he reviews documents with that infuriatingly perfect composed expression, you feel like you're suffocating.
"The delegation from the Earth Kingdom arrives tomorrow," he says, not looking up from the scroll. His long black hair falls like silk over his shoulder as he leans forward, the candlelight catching the amber undertones. It's not fair how beautiful he is when he's focused like this. It never was. "We'll need to coordinate with—"
"With Katara?" you hear yourself ask.
He glances up, and those golden eyes—those steady, thoughtful eyes that supposedly only look at you like that—flicker with something you can't quite name. "Yes, actually. She'll be leading the water tribe's interests, so—"
Lacy, oh, Lacy, skin like puff pastry
Aren't you the sweetest thing on this side of hell?
You turn away, pretending to study the map on his wall. You know her skin is like that—soft, flawless, sun-kissed in that effortless way that makes people stop mid-conversation. You've watched heads turn when she enters a room. You've watched his head turn.
"She'll be here in a few days," Zuko continues, and you hear him set down his brush. "Actually, I was hoping we could discuss the water tribe's concerns before she arrives so we can—"
"So you can impress her with how prepared you are?" The words slip out before you can catch them, bitter and ugly.
Zuko goes very still. The kind of still he gets when he's calculating his next move. When he was a prince, that stillness meant danger. Now, it just means he's hurt.
"That's not what I meant," he says quietly, and that's almost worse than anger would be.
You watch him rise from his desk, all that practiced grace and royal bearing, and it makes your chest ache. He's taller than he used to be—broader, stronger, built like someone who spent years carrying the weight of a nation's redemption. Built like someone who should have someone equally magnificent by his side.
"I don't want to fight about this," Zuko says, and his voice is so gentle, so achingly patient, and you hate it. You hate that he's trying. You hate that he's good. You hate that he's—
"Fire Lord Zuko?" A messenger appears at the door, bowing so low they nearly touch the floor. "We've received word. Lady Katara's ship will arrive tomorrow morning instead. She's traveling faster than anticipated."
You watch Zuko's expression shift—not drastically, not enough that anyone else would notice. But you notice. A subtle lift in his shoulders. A barely perceptible softening around his eyes.
Dear angel Lacy, eyes white as daisies
Did I ever tell you that I'm not doing well?
After the messenger leaves, the room feels impossibly small.
"That's good," you say flatly. "You'll have more time together."
"You're being unreasonable," Zuko says, and there's the first edge of frustration in his voice. Finally. "Katara and I are friends. Allies. We've been through a war together—"
"I know exactly what you've been through together."
He steps toward you, and you hate how your body responds—the way your breath catches even though your heart is breaking. His hair spills over his shoulder like liquid night, framing his face and that scar that somehow makes him look even more striking, like he's been tested by fire and emerged flawless.
"You," Zuko says, and his voice is low, serious, the voice of a Fire Lord who's learned to command respect, "are the one I chose. You're the one I come home to. You're the one I—" He stops, shaking his head. "Why can't you see that?"
Ooh, I care, I care, I care
Like perfume that you wear
I linger all the time
Watchin', hidden in plain sight
Because you see the way his eyes light up when she walks into a room. Because you've watched her laugh at something he said, and watched him lean in slightly, that familiar half-smile playing at his lips. Because last month at the council meeting, she complimented his robes—"That red really brings out your eyes," she said, and you watched him blush, actually blush, that soft color rising in his cheeks—and he looked at her like she'd just given him the highest honor in all the nations.
Because she's Katara. Because she's brilliant and brave and beautiful in that way that transcends ordinary prettiness. Because she spent three years helping him heal, literally and figuratively, and how could he not feel something for her? How could anyone not?
"I see it," you whisper. "I see everything."
Zuko reaches for you, but you step back. His hand drops to his side, and you watch his expression close off—not angry, never angry with you, but hurt. The kind of hurt that comes from loving someone who doesn't believe you.
"Katara is just a friend," he says carefully, as if explaining something to someone who doesn't understand common sense. "We've known each other for over a decade. There's nothing—"
"Then why does your whole face change when she's mentioned?"
The words hang in the air between you like a physical thing, and you can see him processing them, trying to figure out if they're true. And that's the worst part—he is trying. He's thinking back through moments, questioning his own expressions, his own heart.
Watchin', hidden in plain sight
You've become that person. The one who watches in shadows. The jealous girlfriend analyzing every interaction, every glance, every word that might mean something it shouldn't.
When did you become this?
"I don't know what you want me to say," Zuko says finally, and he sounds exhausted. "I love you. I've never lied to you about that. But you're determined to find something wrong, and I don't know how to convince you that there isn't."
"Maybe I just want you to admit—"
"Admit what? That I find her attractive? Fine. Yes. She's beautiful. She's one of the most remarkable people I know. Is that what you want to hear? Because I also find you beautiful. I also think you're remarkable. I also—" He stops, running a hand through his hair, and the gesture is so frustrated, so human, that it breaks something in you. "I can't do this."
He turns away, walks to the window, and stares out at the Fire Nation sunset bleeding across the sky in shades of crimson and gold.
Ooh, I try, I try, I try
But it takes over my life
You want to apologize. You want to cross the space between you and wrap your arms around him and tell him you're sorry, you're scared, you're terrified that you're not enough. You want to bury your face in his neck and breathe in the scent of him—something like smoke and sandalwood and home—and pretend you never said any of this.
Instead, you stand there in the Fire Lord's study as the sun sets, watching his silhouette against the window, his beautiful long hair catching the last rays of light, his shoulders tense with the weight of trying to love someone who won't let him.
"She arrives tomorrow," you say quietly. "You should get some rest."
You turn to leave, and you don't look back even though every part of you wants to. Even though you can feel him watching you go, and the guilt is drowning you, and the love is suffocating you, and the doubt is poisoning everything you touch.
I see you everywhere
The sweetest torture one could bear
That night, you lie in bed next to him—because he asked you not to leave, and you couldn't bear to be away from him—and you listen to him sleep. His breathing is deep and even, his hair spread across the pillow like spilled ink, and he's so beautiful in the darkness that it hurts to look at him.
You think about Katara arriving tomorrow. You think about the way Zuko will stand to greet her, probably taking both her hands in that respectful Earth Kingdom way he's adopted. You think about whatever conversation they'll have that doesn't include you. You think about how she'll probably smile at him in that warm, genuine way she smiles at everyone, and how it will feel like a knife in your ribs even though she won't mean anything by it.
Smart sexy Lacy, I'm losing it lately
I feel your compliments like bullets on skin
And then, in the quiet dark, Zuko reaches for you in his sleep. Even unconscious, he finds you. His arm settles across your waist, and his face presses into your hair, and he pulls you closer like you're the one thing keeping him tethered to the earth.
You lay there, rigid and careful not to move, feeling the warmth of him and the weight of his trust and the terrible, consuming certainty that it's not going to be enough.
The next morning, you watch from the tower as Katara's ship cuts through the harbor, white sails billowing like clouds. She stands at the prow, and the sun seems to follow her—catching in her hair, illuminating her skin, making her look like she belongs to daylight itself.
Dazzling starlet, Bardot reincarnate
Well, aren't you the greatest thing to ever exist?
Zuko stands beside you, and you feel him tense. You watch his hand grip the railing, watch his jaw tighten, and you think: there it is. That's the look you've been dreading. That's the look that confirms everything you've been afraid of.
But when you glance at him, his expression is conflicted. He's looking at Katara's ship, yes, but his other hand—the one not gripping the railing—is reaching toward you.
"Come with me to greet her," he says. It's not a request.
You want to refuse. You want to make him feel even a fraction of what you're feeling. You want to be petty and cruel and give him a reason to actually look at you the way you think he's looking at her.
Instead, you take his hand.
His fingers close around yours, warm and solid and grounding, and for just a moment, you let yourself believe that this might be okay. That you might be enough.
Ooh, I care, I care, I care
Like ribbons in your hair
When Katara disembarks, she's glowing with travel and purpose, her water tribe furs pristine, her eyes bright with the excitement of seeing everyone again. She hugs Zuko—just a quick, friendly embrace—and his arm comes up to pat her back in that way of old friends.
She turns to you next, and her smile is warm and genuine and exactly the same as it would be for anyone else.
"You look amazing," she says, pulling you into a hug. "Fire Nation living must agree with you."
And that's when it hits you, sitting there in her embrace, breathing in the scent of sea and ice magic: she has no idea. She has no idea that you've spent months convinced she's the reason your relationship might be falling apart. She has no idea that you've been watching her like she's your personal demon, cataloging every interaction, every word, building her up in your mind into something larger than life.
She's just Katara. She's just a woman doing her job, being kind to her friends, living her life.
My stomach's all in knots
You got the one thing that I want
But that's the thing about jealousy, isn't it? It doesn't care about logic. It doesn't care about reality. It just eats you from the inside out, makes you small and bitter and unrecognizable to yourself.
That evening, Zuko has to work with Katara and the other dignitaries, discussing water tribe concerns and trade agreements. You excuse yourself early, citing fatigue, and you spend the night alone in the royal chambers.
He comes to bed late, and you pretend to be asleep.
It takes three more days for you to realize what you're doing.
You're poisoning it. You're poisoning him. You're poisoning yourself.
Zuko catches you watching him from across the council room as he listens intently to Katara explain water tribe concerns, and something in his eyes breaks. It's not angry. It's not even frustrated anymore. It's sad. It's the look of someone who loves you and doesn't understand why you won't let him.
Lacy, oh, Lacy, it's like you're out to get me
You poison every little thing that I do
That night, you finally say something.
"I'm sorry," you whisper in the dark.
Zuko is quiet for a long moment, and you think maybe he's asleep, but then he shifts, reaching for you. You let him pull you close, let him tuck your head under his chin, let him hold you like you matter.
"I don't want to fight," he says into your hair. "I don't want to watch you torture yourself like this. And I don't want to torture myself trying to prove something that shouldn't need proving."
"I know," you say, and the words are so small, so broken. "I know, and I'm sorry. I just… I saw the way you looked at her, and I—"
"I looked at her the way I look at all my friends," Zuko says firmly. "I looked at her the way I look at Sokka, or Toph, or Aang. People I care about. People who helped me become who I am." He pulls back just enough to look at you, and his golden eyes are serious. "But you're the one I love. You're the one I chose to build a life with. You're the one I see when I wake up."
Lacy, oh, Lacy, I just loathe you lately
And I despise my jealous eyes and how hard they fell for you
"What if I'm not enough?" The question comes out as barely a whisper.
"Then neither am I," Zuko says. "Because I look at you, and I think you're everything. I think you're the most beautiful, intelligent, kind person I know. I think I'm lucky every single day that you chose me."
He kisses your forehead, and it's so tender that you want to cry.
"Katara is my friend. A good friend. Someone I respect deeply. But she's not—" He shakes his head. "There's no competition here. There's just you and me, and what we're building, and I need you to believe that. Not because I tell you to. But because you look at yourself the way I look at you and realize that you have nothing to be jealous of."
You spend that night pressed against him, and for the first time in weeks, you don't feel like you're suffocating.
It's not a fix. Not really. Jealousy doesn't disappear just because someone tells you they love you. The insecurity lingers like a bad habit, like a song you can't get out of your head.
When Katara makes a joke during council meetings and Zuko laughs—really laughs—you don't clench your fists. You just listen to the sound and remember that laughter is good. That joy is good. That his capacity to find happiness with his friends doesn't diminish what he feels for you.
And slowly, painfully, you stop seeing her as a threat.
One afternoon, you actually ask her for advice on a Fire Nation diplomatic matter, and she gives it thoughtfully, genuinely trying to help. And you realize she'd been doing this the whole time—just being kind, just being herself, just living her life—and you'd been the one writing a narrative that didn't exist.
Yeah, I despise my rotten mind and how much it worships you
The night before Katara leaves, Zuko braids your hair for you—something he's learned to do from watching her, actually, in an ironic twist that makes you laugh instead of cry. His fingers are gentle as he weaves the strands, and you sit between his legs, your back against his chest, feeling the steady beat of his heart.
"For the braid?" he asks, amused.
"For not giving up on me. For not… for still being here even though I made this so hard."
He kisses the top of your head, and his hair—so long, so beautiful, so distinctly his—falls around you both like a curtain.
"Always," he says simply.
And maybe that's all love is, at the end of the day. Not the absence of doubt, but the choice to stay anyway. Not the absence of jealousy, but the choice to work through it. Not believing you're enough, but believing that he thinks you're enough, and trusting him enough to eventually believe it yourself.