A little mermaid in a big grotto

I constantly feel disconnected to from people. Having a group of friends, yet, never really feeling part of the group. Not being invited out to eat with them or no one ever comes to your dorm room. Sometimes I wonder if I'm over-analyzing things. Have I spent so much time thinking about how others should act and behave around me, the way "true friends" act, that every little action that wasn't to my liking is instantly branded as how a friend shouldn't act. I feel left out of things, as if I don't belong.I hoped that college would fix that and it did for awhile. Not all of that just feels lost.