When I was studying duet outside, a male partner once asked me my cell phone number and sent me a text message. I didn't reply to him, but I think he said something bad about me.

I think maybe you think too much. Even if the man who left the contact information says you are not, the other two people, A and B, just listen at most. After all, it is not the moral bottom line, so there is no need to care so much. And as long as you get along more, you will know who you are. You should communicate more with people and learn more. After all, now that you are in the learning stage, there will always be good and bad.