Honestly no clue where to post this but I’m doing a lot of CBT work so can someone help me argue a thought?

I’m a young female, very insecure. I workout at the gym w a friend, a confident pretty friend. Yesterday I was at the gym alone and a guy asked me if she was single. I felt so stupid. Like I was invisible and obviously my friend is prettier and better than I am and more desirable and younger looking, etc.

Mind you I have no interest in this guy whatsoever and I have a boyfriend lol. But he doesn’t know that, and I do want to be acknowledged and get male attention sometimes to boost my self esteem.

Also I’m discounting that literally in the same workout another guy told me he thinks I’m the prettiest girl in the gym. But all I can think about is how the first guy bypassed me completely and asked about my friend.