I've got to agree with
ImAnAspie - If you have so much free time that it's causing you to feel lonely and listless, the best thing you can do is invest that time in things you enjoy, or things that may improve your situation. These would be:
A) hobbies, pursuing or exploring special interests, etc.
B) spending time researching social and relationship intricacies that you feel you could improve on - ie. self help books (ebooks are aplenty lol), forum discussions, etc.
C) pursuing social interactions via whatever method you are most comfortable with (personally, I enjoy befriending people via games/gaming forums, for example, because there is immediately a buffer as you have something in common to discuss).
It seems a lot of aspie guys (and NT guys, to be fair), have an obsession with procuring a girlfriend, and are under the impression that if they could just do so, their problems would be resolved... This kind of approach to a relationship is undoubtedly going to end terribly. My advice would be to first approach girls you would enjoy as
friends, I think a romantic relationship built on such a foundation is a much safer route for we on the autism spectrum.