Most Helpful Guy
you will always be better off without him. if you remember that then you should have no regret as you are finally free from his crap
Most Helpful Girl
Just think about all of the bad things he's said and done to you and how much you don't deserve any of it, this will help you to rid yourself of any feelings for him. As far as seeing red flags and ignoring them, don't think that you are stupid for it or anything like that because it happens to the best of us. Sometimes we stay with people after we see their bad side because we feel that we'll be that special person they will be different for or because we think they will change. Just remember that someone like this could never change for anyone, only for themselves. If they don't feel that they're doing anything wrong for themselves they won't change for you or for anyone so just remember that even if he is onto the next girl, she won't mean anything to him either. It will be a lot easier to handle with time.