Wow alot of responses since I last checked online, thanks for all your comments guys i've taken every one on board.
I've started by getting a fair bit of home gym equipment, once i've worked my body up to a level i feel confident with I shall join a gym. I've also knocked the alcohol on the head a little bit as i was drinking every night as a form of escapism but that was obviously just making it worse.
The SAD is in my head, and i really don't want to have to rely on medicine to be happy. The only way to conquer these fears is to face them, i have never, not once approarched a woman in my life, If i don't learn to face rejection how will I ever loan to cope with it?
As for getting with these 18 year old girls, yeah maybe, I don't think my 3 younger sisters would approve mind you!
U never approach a girl and u cry for beign single... wow, maybe you should ask out girl ?