Thank you all for the helpful replies and perspectives. To answer a few questions: His best friend is open to everyone that he’s gay and actually has been in a long-term open relationship, but has expressed a lot of sadness around the relationship (like wanting to end it, but never fully doing so). He also doesn’t talk about his boyfriend when he’s not present. So I do think he has some personal relationship issues he’s dealing with and may be wanting a more solid connection with someone (which is probably why he feels his long friendship with my boyfriend is extra special).

We actually attended a wedding this weekend and he was there and it made me feel a little better to recognize that he wasn’t really singling out my boyfriend with attention- he was showing almost EVERY male there attention. His boyfriend was not in attendance for this wedding.

I’ll take all of your advice and not let this get in my head. I’ll try to be more confident in my relationship and suggest doing things together as a friend group to feel more included.