Invisible update

So, I said I wasn't going to be invisible, but I did it again last night. I was at a party where I only knew a couple people, but instead of talking to everyone and getting to know more people. I kept to myself. I'm not sure why I do this so much. I usually only talk to people who talk to me first, that way I know they really want to know me better. Makes me wonder if other people feel the same way, and I'm just making it hard on them...