A rotten woman in the office said that I was gay in the same office as a man. Shit, we just go out of the office together after work.

Your request is not too much. She is a degenerate girl. Love YY is her personal hobby, and she should not interfere. But now her behavior seems to have affected your life and work, so it's her fault. In fact, she didn't mean any harm, just for fun. If you think this bothers you, then I suggest you have a good talk with her, tell her seriously that you don't like it and ask her not to come to YY. I believe that most rotten women will apologize to you after a formal conversation and stop this behavior. If she still doesn't stop, then you can consider changing offices.

So, I think what you should do now is to let her know that you are angry with her behavior and it bothers you. You are serious, not joking.