I started to mix up online friends and physical friends. I'm part of the brony fandom which is pretty active around here; usually once a month we all meet together and we're all people who first talked to each other via online community (meetup sizes go from at least 10 up to 50+).
I also met my girlfriend online as well, and I just can't imagine to find such a wonderful person who shares so many things with you just by meeting her on a party or something. When I went to a party, I just knew I probably won't see anyone there again, even if it wass a good time. That's how it always has been to me, including parties, schools I've been to, whatever. I never really kept close contact to any of them because we were just too different, but that's okay.
I have no problem talking to people I meet just like that but it almost never happens that we share anything. If we do, it's always cool, of course, but I met some really great guys because of the MLP fandom and they're really good friends to me. But since I also know them in person, it's kind of a mix, and everytime we meet, it is a blast.