I had this one friend who just recently came out of the closet at age 30, we went to college together and everyone thought he was a recluse, either that or just anti social and shy...he used to go out with us from time to time to the local bars (he was very specific about which bars he would and would not go to, only one sports bar and only early at night)...
well after he came out things drastically changed with him, every topic discussed revolved around his "gayness", you could never have a "normal" conversation with him as he didn't want to talk about anything else, I guess if I was holding something in for a long time then I would want to be open with it too..but for everyone else the novelty wore off after the first thousand stories and with him controlling every conversation....
He began to try and pressure myself and our circle of friends into going to the local gay bars with him, he would say that we forced him to go to straight bars in college and that we owed him which was the furthest thing from the case.
He would often make comments to the effect of how he just couldn't understand why we would be attracted to women and that really being gay was the best option...
There were other things that he did, but those were the ones that stuck out in my mind the most, needless to say I no longer talk with him...I have plenty of lesbian friends and have no problems with them, I also know or have known a few other gay guys and had no issue with them as they seemed more secure with themselves...personally I would not be happy if I were labeled as "gay" don't know why just wouldn't be comfortable with it...