What are you studying at college? What are your interests?
You sound like a pretty great person to me. You're going to college, you have a job, you're concerned with other people -- do you realize how few people in this world are doing as much as you're doing? Not many of us are successful in all aspects of life. I'm an NT mother of two aspie sons, and I'm feeling like I'm pretty much useless at everything right now. But I keep telling myself, over, and over, and over again, that there are some things I'm good at, and the other things I'm trying as hard as I can. That's good enough.
Maybe your stepfather is not the person to develop a relationship with right now. This may not be the case forever, but for right now, I would just concentrate on yourself, and trying to get YOU to where you feel good about life. This may or may not include finding other people with aspergers to socialize with, or just finding other people with your same interests or career goals.
I'm glad you're on WrongPlanet -- we need people like you.
Kris