I met a guy like 4 months ago. We started flirting and everything was going fine until I find out he was married which by the way he told me himself. And I told him to stay away me, and its not fair on me or the other girl. He was saying I like you and I have a wife. I don't know what to do, and I'm confused. He's 26. I guess he got married pretty quick. Anyway he agreed and then I don't know how it happened, we kissed. I feel extremely bad as I wouldn't like it if my husband cheated on me (I am not married).
But I notice something with this guy. It's like whenever another guy jokes with me he gets upset. I went for lunch with a guy friend, and when he saw us he got pretty upset. He wouldn't even want to talk to me, He's jealous but why is he even jealous? We don't even have anything together. We kissed yes and that's it. Just the last time he told me someone ask me for my number and he refused. He said I was married and he told me he couldn't tell the guy there was something between me and him. When I told him clearly there's nothing between us, he was shocked.
Why does he do like that? I can't even ask him about it as I know he will be changing the topic.

