I know my friends and I (and maybe you guys too) will sometimes have fake relationships going on, like if we get into a joking argument I'll tell her I want a divorce. (Usually several times, resulting in multiple divorces and no marriages.) Other times we'll talk about how I cheated on her because she didn't satisfy me emotionally, as I want children and she does not, etc. I do this with multiple people. I want the whole YJ team to talk to each other like this (jokingly) and have the JL members catch them. It doesn't even have to be to this level, maybe member A refers to member B as their boy/girlfriend/wife/husband. Maybe they just refer to other team members as "baby" or "dear" whenever their mentor shows up.

"You're fucking with me." Tim blinks up at his uncle – and he's never seen his uncle in full armor before, not in person. It's kind of daunting. "Please tell me you're fucking with me, spawn."