Jitters,
I'm afraid I can't give you the magic cure for your loneliness (partly because I'm looking for the darn thing myself), but I can say this based on someone else's experience in a different thread.

Blokes are not all shallow-minded. You say you have a 'collection' of anxiety and depressive disorders, but a good bloke will see straight through them to the gorgeous, caring, loving girl inside.

Don't give up. That cave of yours will be so much nicer with someone to share it.

Good luck, and if you find that cure, send some my way