I agree with the frequency thing as far as longer term friendships. I can only speak for myself as an introvert; however, beyond needing that alone time to rec

I agree with the frequency thing as far as longer term friendships. I can only speak for myself as an introvert; however, beyond needing that alone time to recharge myself, I find that I tend to like to be social only in small groups. When my wife and I go to social functions.. if it's a larger function, it's pretty much a guarantee I'll latch onto one or two people and chat with them the majority of the time (learning more about interesting aspects of their lives, professions, etc.). I also think it's easier to begin to become acquaintances and friends with those you have the higher frequency meetings with. The easiest way to make that happen is to look at things you (OP) want to explore and / or improve upon. Perhaps those could be improving his english ( http://english-conversation.meetup.com/cities/us/ca/san_francisco/ http://english-conversation.meetup.com/cities/us/ca/san_fran... ) and / or perhaps some sort of activities (do you want to try rock climbing? yoga?...find some things that interest you and give them a try by finding some beginner classes...)