I suppose if you want it that badly you can only keep trying - be wary of coming across as desperate though. Maybe a good approach would be to engage in more things that you enjoy (e.g. through clubs and activities etc.) and hope that friendships will occur as by product? I don't think you can really be classified as a social leper - you have two close friends who in the very least you can always Skype and you have a fiancee too, so that's one up on a lot of us here. I hope your situation improves.