people are going to romanticize abuse

I'm curious about the degree to which their relationship will be portrayed as an abusive one in this movie. I don't think it will be one where Joker is controlling Harley like in the animated series, it'll be more about Harley becoming unhealthily obsessed with Joker. He's a mentally ill prisoner and she's a therapist at the prison who's supposed to help him, so pursuing a relationship is obviously a major ethical violation on her part. So maybe she will be the more controlling manipulative one in the relationship, or perhaps it will be mutually abusive - but definitely not healthy regardless.