Yeah, this is why I have such a hard time making friends. I will try to talk but it takes a long time for me to get comfortable enough to just talk normally and joke around. So if a person doesn't stick with me for a week or month, I don't start talking and they leave. My friend and roomate in college at the moment kept going to dinner with me in my freshman year and kept doing it even if I didn't talk much (just school related stuff). Then, eventually we had a class together and I helped with hw and then I got comfortable with her and now can talk to her like I talk to my family. Usually though, this doesn't happen, because people just give up on trying to talk to me.