The Joker is awfully domestic, in his way. He makes pretty clothes. Nathan's perfectly happy to be a clothes horse for his sartorially-inclined mate. Some of the clothes are distinctly feminine, and Nathan does not wear those, although the Joker could probably talk him into a kilt, even if that's not a Manx thing but only their neighbors.
"Okay," says Kerron affably.
"Okay," says Kerron.
"Lovely." She hands him over to the Joker.
But this is not their room, this is Milliways.
"Huh," Nathan says. "...We could spend days in there and Kerron wouldn't even miss us."
"Let's do it," he says brightly. "I'll show you my old room. Did I tell you I had a room? It's cozy. I got shot there once, it was fun."
Right behind them, there is a person in a terrifying, expensive bat costume of negligible festiveness, stumbling in and clutching a gut wound!
And, less distracted by pain.
"You. You're supposed to be on an asteroid."
Nathan is not so much looking daggers at her as he is looking glowing razor-sharp magical poisoned swords at her.
Nathan hugs his mate very, very tight.
"Love you, baby," he says, hugging back. Speech and hugs are both difficult under the amount of pressure Nathan is putting on him, but the Joker has practice. "Don't eat her, okay? I'd be sad."
"I hate her, I hate her, I hate her," growls Nathan.
"Oh, honey," he says, hugging Nathan tighter. "I love you. I'm sorry you hate her."
Snuggle.
Nathan is on board with this trajectory. Yes.
Meanwhile, downstairs, who should walk in but a certain Stellar Bell?
"I believe I owe you three wishes, if that's what you have in mind," Stella says, tilting her head.
"Work-release program. One of my alts' staff did this inconvenient irrevocable-love-at-first-sight thing with him so I let her take him home so her employee wouldn't be eternally despondent. My very best guess is that he won't be terrorizing Gotham from there. Why, is he here?"