Hello, I have been sleeping with a male coworker of mines since April 2018. We are not in a relationship but we have been having casual sex and he comes over to my place sometimes
We have went for drinks after work a few times. He is about to be 32 and I just turned 35 so we don't have a big age gap. However, recently he has been spending every break and lunch with this girl who just turned 20 a few months ago. He said they go to smoke on lunch and have the same break schedule. I was in my car eating lunch today and I see them coming back in his car. He dropped her off at her car and circled around the building. I asked him flat out weeks ago was he screwing that young ass girl and he said no. He said they go to the park to smoke (not cigarettes) and come back. I know he is not my boyfriend but I told him I do not want to have sex with a man who is trying to screw my female coworkers. I also feel bad because he literally spends lunch with her and breaks all day long. I feel stupid and left out. It hurts my feelings because he seems so close to this 20 year old but after a year him and I have never been that close. I thought we were friends but I guess I was wrong. He said he is not having sex with her but I am torn. He never asked me to go to lunch or break ever. Should I not feel this way because we're not in a relationship or do I have a right to feel bad? Please give me advice. Thank you!