Hi and welcome to PC.
We have a GLBT group here on PC that you might want to check out and ask your questions there along with here.
http://forums.psychcentral.com/forumdisplay.php?f=110
I don't know the answers to your questions. Are you in therapy to help with your agoraphobia and social anxiety? Would you feel comfortable talking with your therapist about your fears about dating and self-acceptance?
I hope that people are able to give you good advice.