My brother (dxed with "Pervasive Developmental Disorder NOS" because, although he met criteria for Aspergers, he also had Schizophrenia, and the DSM doesn't allow for both) wanted very much to be social. He was obsessive about it. He tended to focus on one girl and even if he didn't go around her and bug her all the time, all his thoughts and prayers and everything would be about the girl. I'm pretty sure that it wasn't always the same girl, but it would be one who had treated him decently, as not everyone did, so he instantly became obsessed. Pattern repeats.

He wanted very badly to love someone and have it returned and have a family. That was what he lived for. But he was also convinced that he could never have that. Which is why he killed himself. He didn't know how to get his social needs met, but the needs were very strong. He burned people out - people who wanted to at least be decent to him. Anything he cared about, he cared about obsessively.