Ig this is how their first meeting(s?) went, in my AU.
Joker fell in the acid, he forgot everything, Batman was the only thing he remembered, so naturally, he blamed it all on him. Then kidnapped him to get revenge, make him go through exactly what he did, take a dive into acid! But of course, Bruce escapes. Joker gets frustrated and keeps trying to get to him, but Batman keeps winning. Then at some point, after becoming obsessed with him, Joker falls in love along the way. Then it goes from "Revenge" to "This is our love language now".
(btw, I translated this myself, according to the meaning.)
Idk how this one will be recieved, but I've had the song stuck in my head for a while and I thought these lyrics suited them soooooooo. Ye.
And ik the song choice is BAD, but I realised it too late and had to follow through anyways. Feel free to ignore this one's existance :)
(Can't forget to give credit!)