I'm social, but I don't like to have 50 "close" friends. When I get home from work, I don't want to be social with more than a few people, if that many. I'm a people watcher, so I'll be quiet at first while I study the group of people I'm in. In the past, I used to wait for everyone to come to me, and now it's probably 50/50. Unless I just met you... then I tend to want you to initiate contact the first few times.