<human>: So, I've been hanging out with a new group of people recently, and we've all be having a lot of fun together and have quickly become very good friends. Recently, one of the girls of this group and I hooked up--and it was mutually a really great experience. We both had gotten out of bad relationships recently (mine was a 4yr, over 4months ago, hers was a few months long and ended a few weeks ago). She had just dumped a guy who was a bi-polar alcoholic, and she knew it wasn't doing her any good, so she left him. (She met him on one of his 'Highs' and really fell for that side of him.) He's since been on a bender, pouring his heart out to her and begging for her to take him back--saying he'll change, that he'll be better, but he's been doing it very immaturely: insulting her, threatening her...though it's clear he's just being dramatic. 

Either way, I care about this girl, and don't want to see her get caught in his emotional web. She believes that she has unfairly given up on him, and feels that she cannot abandon him like everyone else has in his life. When telling her that it's not her responsibility to take care of this boy, she notes that that is what everyone else has said, and that she's not going to be like that, and wants to help him.

What can I say that is sensitive to her position, but helpful to let her see that this is a toxic relationship and that it's in her best interest to leave him. I don't want to come across as being jealous or self-interested, because i'm not. I'm concerned for her well-being as a friend.

Can you provide a brief overview of the text?
<bot>: Friend with whom I have had romantic involvement is back in a toxic relationship with alcoholic ex, in which she feels she compelled to 'help' him, but I want to help her and am not sure how to go about it.