Ok, so I've been with my boyfriend for almost 6 months, and things are going really well. 5 months before we got together, he broke up with his girlfriend of 3 years..I say 'he' but it was actually a mutual agreement, they both decided they weren't getting anything out of the relationship anymore. Anyway, they still see each other as friends, maybe once a month or every couple of weeks they meet up for a chat and a quick drink during the day on campus (despite breaking up, they ended up at the same uni).
She is in a new relationship too and seems happy with her new boyf. However, on a few occasions, I've seen the way she acts with my boyfriend and I don't like it...we were at a club once and she wouldn't leave him alone...she also seems manipulative and despite seeming happy in her new relationship, she often shouts at her new boyfriend. From my perspective, she still has feelings for my boyfriend and is having trouble 'letting go'. I imagine her new boyfriend is just there to keep her busy and if she could, she would have my boyfriend back.
Basically, I don't like the fact that my boyfriend still meets up with her. I would never tell him not to or give him an ultimatum, but he knows I feel uncomfortable about it. We've chatted about it a few times and he says there's nothing to worry about - he doesn't have feelings for her anymore, and it's just like a normal friendship. I just can't seem to understand how someone can suddenly 'switch off' from being in a long term relationship to just being friends. I do trust him 100%, I know he wouldn't mess me around or cheat on me - but surely it's just natural for me to feel annoyed and upset that he still sees her? What do you guys think? Not looking for an answer, just some general perspectives really.
Thanks.