Lilith

John actively flirting with Bruce, asking him if he wants to kiss? Hold hands? Hug? And everyone is laughing at his face until Batman just do it. All broody and scary Batman giving Constantine a hug.

Bruce thinking he have issues until he mets Constantine. They both match each others freak to the point everywhere they goes it’s become chaotic. (Mostly John gambling with his life and Bruce trying to keep him alive)

Batman used to call zatana in the past when he needed help with magic, now he call John and try to find every excuses possible as to why that is not related to him having a crush on the man.

Who top and who bottom? I personally like Bruce railing John but also, John is way too cocky to not at least once get inside batman.

You can’t tell me Batman and Constantine didn’t at least fuck once in canon. Have you seen those two together?

Everytime John mention that he is dating Batman no one believe him, because Batman dating that mess of a man? No one in the league can believe that. Until one day they find an injured John sleeping on Batman’s laps while Bruce work. Everyone just stare blankly and now think back of all the jokes Constantine made about his life with the bat, turn out it was true.