It’s DT’s intimidation tactic.

Chanti: “Dee, you know you don’t need to be doing that.”

for Chanti?

Hmm, I'm not sure if I'd use respect, but Chanti holds a lot of admiration/comraderie for Frosta. The girl was 11 years old and running her kingdom, she was put into an adult's position and making adult decisions, and probably lost out on her childhood for a bit. Chanti knows how that feels, taking the throne when she was roughly Frosta's own age. She has a lot of feelings about it, and how rough the girl must have it. As for adults, she respects Entrapta a great deal as well. She loves her machines and her ideas and keeps inviting her over for advice or just to hang out.

What small quirks do they love about each other?

Chanti wrinkles her nose slightly when she dislikes something but can't actually voice it. It's subtle but DT can pick up all kinds of tells in other people, and they think it's endearing. As for DT, Chanti would never tell them out loud but she likes how they sit down to watch a performance. They just take a seat with their arms crossed, reclining, one leg crossed over the other, and with this general air of "Alright, impress me." It's just so them that she loves it.

Who makes the other laugh more?

DT. Absolutely. DT will make snarky comments to her and damn it, Chanti can't help it. A "snrk!" slips out. DT will prompt her to just go ahead and laugh, that was funny, she thought it was funny, go on, and then make it their entire mission to make her actually laugh. And they always succeed.

And that's not even mentioning how they get her to laugh with purposely-dramatic or ridiculous performances.

Who has a hobby only the other knows about?

She tells them about fire.

Fire is not just a weapon.

It can be. But honestly, anything can be a weapon, in the right hands. Fire is not pure destruction.

Fire is a guiding light in the dark. Fire in a warm hearth in one's home. Fire cooks your food. Fire can close a wound in an emergency. Fire can be used in art. Fire can burn at the hem of her dress or the edge of a stage. Firedancers use fire. Fire can be safe, comforting, guiding.

Fire can be a weapon. It can burn an empire to the ground.

Alright, Shifting Flames babyyyy

How often they fight: Actual fighting? Not much at all, tbh. The most heated they'd ever get is probably concerning Chantellier hurrying up and getting the fuck out of Fierno Isle before Prime shows up, and then DT thinking "Fine but I'll look like you to confuse him." There was shouting. It wasn't fun.

Apart from that, they do occasionally butt heads over their... shall we say differing approaches. Chanti thinks they should always try diplomacy first, and prefers not to escalate anything. DT says they totally agree but let's be manipulative about it and play to their opponents' emotions rather than reasoning.

And then there's the little "Go to bed, Firefly" arguments. Sorry, DT, you love a workaholic.

What their wedding looks like:

Glimmer: “Break up.”

Adora: “Tackle them.”

Mermista: “Punch them in the stomach and kiss them when they double over.”

Cadence: “I- I was with Bama.”

Nearby Guard: *suddenly shifts into Double Trouble*

Who has to force the other into having healthy sleeping habits? How well does that go for em?

Heheheheheheh Chanti is a horrible sleeper before she ends up with DT.

She pulls all-nighters, and then wakes up super early. She takes paperwork and documents to bed to look over them until she literally cannot stay awake anymore.

Meanwhile, DT… didn't have the best sleeping habits when they weren't doing a job/pretending to be someone else (The Crimson Waste is lawless. You can't lower your guard too much even when you're asleep. The Flutterina gig was one of the few times in recent memory they were able to fully relax and sleep) but now that they're living in safety and luxury… Well, their sleeping habits get much better. They're able to sleep a full eight hours or longer at least, and they take full advantage. Why wouldn't someone take full advantage.

So it drives them insane to see Chanti not doing it, they drag her ass to bed. Fling an arm over her, wrap their tail around her leg, anything to keep her from getting up and staying awake longer. They don't let her wake up too early too often either, flopping on top of her and weighing her down until she gives up and stays in bed. (And then they whisper smugly "I win" and darn it, she knew they weren't asleep!)

Do they have pet names for each other, if so what are they? How does their partner feel about their pet name?

DO THEY.

DT calls Chanti 'Firefly.' Though they'd already been calling her that, because DT kinda nicknames everyone instead of calling them by their actual name. Over time, though, it shifted from a casual nickname to a petname, especially when they add "My" to it.