I go through this everytime I start to get to know someone...whether through school, work, or whatever. I always think that people don't like me. For a long time, I avoided making friends because of this. Then, when I worked with this one girl, again I thought she didn't like me. But, she started asking me to go out after work. She is now one of my best friends. I thought my other best friend also disliked me at first. So, now, I still get these feelings, but I can see that they are irrational. My friend is baffled that I thought she hated me. Weird.
Sometimes I wish I were someone else, but then why not just try to be the person I want to be?