Most Helpful Guy
I can speak from experience because this recently happened to me. We broke up about a week ago after her best friend of several years came back to the states for a visit and she admitted she liked him.
I get the impression that most people would either resent him for taking her from me, or would resent her for somehow betraying me. As it so happens, she remains one of my all time best friends. Admittedly it was easier for me than for most since I'd have probably been shipping them the whole time had we not been an item.
The way I look at it, she was pretty much my best friend before she became my s. o. I have always thought if you're going to have a relationship, it should be with your best friend. The simple fact of the matter is that I wasn't her best friend and I didn't have to be. She is still one of my best friends and I am still one of hers. I'd be a fool to give up our friendship simply because I'm not number one in her life.
Most Helpful Girl
Depends on why we broke up and who the person is. If he cheated on me or something like that then, no. If it was more of a mutual thing I wouldn't mind staying friends and keeping things civil as long as we ended things on good terms. Tbh though there's really no point in keeping them around as friends, they always pop up again when you're happy and make you question whether or not you made the right decision in leaving them. It's just best to move on completely if that's an option