I cannot believe that he would do this again but he did and now in all it's explicit glory.
https://twitter.com/acronite7/status/756542233424388096 (there is a gif here where you will understand what I am talking about)
and It gets worse:
Timm, it's okay to have your little fanboy fantasies, what it's not ok, it's to put them directly on screen. I don't know anybody that liked Bruce and Barbara being together on the Animated series, It seemed inapropiate that Batman was banging the daughter of one his best friends but also the ex girlfriend of his younger partner. But now Bruce feels guilty about it and Barbara has to convience that a one night stand doesn't mean anything, this is the kind of thing that I don't expect and don't want in a Killing Joke movie.
I am still exited for the film but that's absolutely not good, it has to have great execution to convience me otherwise.