My daughter has always chosen boys poorly. She is now 15 but all the time growing up she would talk about this boy or that boy and we knew how stupid those choices were. We never made an issue of it, never told her who she could or could not date.
The other night she was finishing therapy and called my wife in at the end of the session. She broke down and told her that her most recent boyfriend convinced her to have sex with him in order to keep the relationship going even though she felt it was over. This kid is a world class shit and I actually told her this time that he was a broken little emo that she wasn't going to fix but that I wouldn't forbid her from making a mistake. She would always say 'yeah yeah, I know dad". Well anyways he comes over and fucks her and then walks out and breaks up with her. She has felt like garbage ever since that and was talking to her therapist who suggested she explain it to us.
Now she feels better but you best believe I was seconds away from going over to his house and getting on his WIFI, hitting up the "deep web" and ordering a brick of heroin to his doorstep with his name on it. That was just the least destructive thing I could think of. He lives 3 houses down from us .... every time I drive by I come up with a new plot. He didn't force himself on her though, it was her decision. That doesn't make it easier though. I know his parents have put him in the mental ward of the hospital twice for suicide attempts and that he's an absolutely worthless human so telling them to watch out for the kid or eventually he will rape some girl isn't going to actually do anything for them or him.
I just had to vent it because this isn't something you tell your friends at brunch.