But not be sure if actually there's anything I can DO?
Friend of many years has been in an on off relationship for the past 2 decades. About 4-5 years ago he started shagging someone else (because due to friends health issues their sex life wasn't happening). This came to an end fairly quickly but since then they've been in relationship limbo. Still spending a lot of time together (at least 3 nights a week), have keys to each other's homes, go on hols together, everyone treats them as a couple but physically there's nothing going on.
Things have come to a head because he's now shagging someone else (who is married). Friend asked him and he denied it and is generally being quite arsey about it. Married woman, her husband, friend and her ex are all in the same interest club...
Friend is hurt but knows she shouldn't be over him having some one else (although i think he should have been honest with her) but can't quite detach herself. I've given her a good pep talk about how great she is and not wasting her life with this guy who has never really treated her well (she compromised on marriage and kids because he didn't want that stuff). Beyond that I can't do much more can I? I'm happy to do whatever will help her, she's like a sister to me and I hate seeing her so down.