Question regarding women in the gay nightlife

Yesterday during lunchbreak me and a co-worker, who is openly gay were talking and the topic shifted towards women who go to gaybars and clubs to have a good time, but spend the time there flirting and even groping them.My co-worker said that has happend to him alot and that it's an epidemic. Now I am not saying I don't believe the guy, I am just curious if this really does happen alot?Did it happen to you, did you get unwanted advances from the opposite sex while in a gay bar or club? Did they touch you without asking and then said "it is okay cuz your gay" or something to that extent?I am genuinily curious if this happens often.