Am I being dramatic ?

So me and this guy have been talking for months now. It was pretty much a situationship. So ofc nothing too serious since we are not in a committed relationship. He told me I was the only one he was talking to 🙄 I never really believed him but my friend messaged me today and told me he started talking to her in a flirty way.

Even though I know we are not in a committed relationship and I’m fine with him talking to other people..i guess, my only exception is to not talk to my friends. The only reason I have this standard is because it causes drama that I don’t want to deal with. He also knows about this standard and agreed to not let me down but now he messed up and now I don’t want to keep talking to him because I’m disappointed in him.

So my question is ..am I being dramatic for this since we are not committed or are my feelings valid? Please help thank you ❤️