I have the same problem, but im still in highschool (last year). I used to be out partying and hanging with friends daily but that all stopped suddenly. I only go out for school, and i want to go out but now im terrified of new people and groups of people. Its hard to explain, i feel like i want to socialise and feel lonely but have no good chances because nothing happens but at the same time i feel extremely shy around people. Ive been living like a hermit for about a year now and its screwing with my head. All i keep thinking to my self is it will all be back to normal in a few months, but it never is
I know what you mean by your friends abandoneding you mine all did it at the same time, i do see and speak at school but they never invite me to partys or to hang anymore. I dont get it i didnt change or anything. Schools becoming worse and worse because of the social phobia, classroom situations are like torture.
Anyway if thing get better for you some how tell me how you pulled it off