what about joining a night class or something? what about changing your job or getting one if you haven't got one?
i felt a bit like that when i left school, i fellt i didn't reallly belong with the people i'd been hanging around with for years in school but made some great mates at uni and are still in contact since we graduated.
try going to different places, even if its on your own, like swimming. or what about getting in contact with old friends?
smile and (just like boyfriends) they'll come along when you least expect it.
x