How common is it to be in a long-term relationship and not really have mutual friends? I met a lot of my ex's friends and acquaintances but none of them ever became my friends or acquaintances outside of him. I'm not sure he's met many if any of my acquaintances or ones that have become friends. A couple of colleague/friends I guess. For most of the relationship, most of my socializing was with him or his friends or family. It's too bad I couldn't really forge a connection to any of his friends, but I don't know, am I supposed to? Are people in a relationship just supposed to have separate friends or are they supposed to have common friends? I am still bummed I never got to meet his #1 best friend in person (He apparently considers at least four friends to be his best friend. He was never very good at math...).