Is it wrong to feel the way that I do ?

So I met a guy a year ago we flirted , he was really memorable but I didn't get his number at that time. I went to that place for a year never ran into him again. Then just in December he shows up , we start talking like old friends that haven't seen each other in a while and he gives me his number but problem I got back with an ex like a few weeks before I ran into him. The whole reason I left this ex is because he said a committed relationship was unrealistic and he wanted to sleep with other people. So I started texting this guy and I explained I was seeing someone rn and he understood he was bummed, I opened up to him about the situation and he asked if he could steal me away I said no it wasn't a good idea. So we've been talking a few weeks and now he came back to my city for vacation I didn't wanna meet up in case something happened. I broke it off with my ex two weeks ago. Then I actually started talking to him we ran into each other and he told me he was seeing someone my heart completely shattered, I said I understood it's okay I'm happy for him. But I'm actually not I have messaged him in like 5 days and I tell, the way I wanted to fate this guy is ridiculous but he's seeing someone else and he was very clear he was happy , I was the one that suggested we stopped talking and I totally regret is it wrong of me to wanna steal him away from this person. Does it make me a bad person, like I believe the whole u lose them how u get them, but u can't get him out of my head at all it's torturing I keep zoning out at work and it's killing me and my small just drops. I think I should wait it out until the feeling goes away maybe I'll find someone else that I really like. Or should I steal him. I don't know anymore it's conflicting like this man is fine and his personality is absolutely amazing and he's so respectful. But I don't know I don't wanna be a bitch and ruin everything for him him he seems really excited about this girl

Is it wrong to feel the way that I do ?
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