so my best friend and i have been friends for 10 years. he talked to me on facebook today and told me that he is gay and wanted me to know. i was stunned, and still am. i feel extremely uncomfortable talking to him now, and i haven't said anything since i just replied "ok". it seems like the whole way i think of him has changed. i don't think i'm homophobic, even though it grosses me out. can someone give me some advice?