I don't know how to console you, only to tell you I've been there myself. I was on my own in a very depressing house for about 4 years, AND, without a computer! Arghhh! Needless to say, the psychiatric symptoms started to set in pretty close into year 2. Its awful! I know it is, its just revolting.
Its good to hear you are moving in with mum and dad. They'll provide you with the company you need and you can start dating again when you feel better.