I just posted something similar.
Hopefully someone can chime in with some advice. I'm wondering if someone can offer some advice aside from telling us to meet people at AA. It's just crazy how much you notice how the social activities revolve around drinking after you quit. I am not sure how old you are - I am kind of past the age (in my early 30s) of going out to bars until 1am every weekend. I have no idea what someone in their early 20s would do, because that's basically all I did back then (party, dance, go out, socialize - all with alcohol involved at bars or clubs)
I would definitely be annoyed if my boyfriend went out to a bar without me. Maybe like a once in a year thing, but if he is doing that all the time it would bug me. He does need to have his own life, though. Tough situation.