Last prompt/idea for poly week:
Adrien x Marinette x Luka but Marinette ends up fucking up their relationship with her weird antics and Kagami ends up “replacing” Marinette in the polycule. I just think Adrien x Luka x Kagami would be very cute, they have quiet dates together where no one says anything but they still feel loved, they probably have like movie nights or something.
K bye
Okay, let's do this :)
Luka was the one to ask the other two out. Adrien, who had gotten a crush on him after their first meeting, was happy to accept. He wasn't sure if he was poly, but he wanted to try. Marinette, on the other hand, only agreed because it meant Adrien was her boyfriend. She didn't have to ask him out now, Luka did that for her.
They were honestly a normal throuple at first. Adrien slowly began to feel more comfortable with dating multiple people (honestly, it was so nice, he got even more cuddles), Luka loved surprising his partners whenever they got out of school, and Marinette made small gifts for her boyfriends.
But then she begins pushing one on one dates. And she only ever dated Adrien.
Of course, Luka was upset. But he didn't want to ruin their relationship, so he let it go. But he couldn't help but wonder if they'd last.
Adrien didn't like that Marinette kept taking him on dates and not Luka. She wouldn't even let him take their boyfriend on dates. She only ever asked him about his day. She slowly stopped making gifts for Luka.
Marinette, who had been purposely separating Adrien from Luka in hopes of convincing him they should become a couple and break up with Luka, tells Adrien she wants to break up with their boyfriend.
She insists it'd be better if it was just the two of them. She could make him happy. Can't he see how hard she's working? Just to make him happy?
Adrien, to her surprise, doesn't agree. Tells her that he hates that she hogged him to herself. That she ruined every attempt he made to take Luka out on a date. Just the two of them.
Adrien offers a compromise. Both she and Luka could date him, but she didn't have to date Luka. They'd still be a polycule. They could work things out.
Marinette immediately turns on him. Tells him he just wants to be in a harem, probably like in one of those stupid animes he's seen or fanfics he's read. He'd really like that, huh? He's gonna ask them to add more people to make his little fantasy come true. Fucking whore.
Needless to say, Luka finds out about this and ends their relationship for good. He apologizes to Adrien, he didn't want something like this to happen. He's pleasantly surprised when Adrien tells him he still wants to be in a relationship with him, but he can't be in one with him if he ever decides to date Marinette again. Something Luka understands.
Marinette can't help but glare at the two as they continue to date. Maybe this is what they wanted. She was just part of a little experiment and they decided, yeah no, we want to just date each other. We don't need Marinette.
She wasn't expecting them to hang out with Kagami. To see the three of them be comfortable around each other. To see Adrien and Luka be so...tender with her.
She totally didn't scream into her pillow when she learned Adrien and Luka had asked Kagami to be in their polycule and she not only accepted, but got her mother's blessing. She didn't. YOU'RE A FUCKING LIAR, SHE DIDN'T!!
Marinette, eventually, decides to forgive Adrien. Poor boy is just confused. He doesn't understand what he wants. That she's everything he ever wanted in a partner, a girlfriend, a future wife. She'll apologize for getting mad. He'll understand she didn't mean what she said.
Kagami is the first to notice Marinette hanging around wherever she and her boyfriends are at. Park? She's hiding behind a tree. Movies? A few rows behind them. Adrien's house? She swears she saw her duck behind the garbage bins.
When she brings this up, Luka tells her about how Marinette tried to get Adrien to agree to dump him so they could become a couple. How she slowly began to separate from him and never let Adrien date him. Even though he was also his partner. Even though Adrien tried, she always pulled him away.
Kagami knew that. They told her about their failed relationship with the other girl. But why was she following them?
When she learned Marinette had been obsessed with Adrien since before they dated for a short time, it began to click. Luka assumed Marinette decided to forgive Adrien for breaking her heart and was trying to date him again. Juleka had been the one to tell him. Adrien didn't know Marinette had decided to pursue him again, but he mentioned feeling like someone was watching him and it was freaking him out.
Kagami swears that the next time she sees Marinette, she's going to punch her in the face. That would be her only warning.
