Is what I did wrong? Was it cheating? And why can't I stop wishing this guy was mine?

Hi everyone, I'm new to this site but I really need advice for something I did the other night because it's eating me up with guilt. Basically I met a guy at work who was nothing short of perfect. He was a football captain, blonde hair, blue eyes, handsome and The best thing was he wasn't a jerk he was really sweet, anyway I was working with him for one night ok 1 night, by the end of it we were.. Ok you could mistake us for a couple, but sadly we Wernt. So after work we walked and talked for a while and things were getting a bit ehmmm hot, so I asked if he had a gf and he said yes. So I backed off right away and said I had to go, so I left then we kept contact but he was always asking to go for a drive and be alone or something. Now what happened was I finally got cornered with no excuse not to see him 2days later, so at about 8pm we met at a park and I got there and he hugged me, we held hands, laughed and talked, and the whole time we were talking he had his arms around my waist holding me tightly and so close if I looked directly at him out lips would be touching pretty much. Ok so skipping the details he made all the advances and I just went along with it because I'm single. So obviously we had sex and an amazing night, but after all was done. He felt really guilty and he said his never cheated before, he and his gf are fighting etc etc. but he was still genuinely sorry. Anyway I def can't say I love him, because ive only known him for 4 days, but I'd never sleep with someone who I didn't care about. Now he probably thinks I'm just a whore. When actually Im not. So what does that make me? Did I do something wrong or what, all I know is I feel so guilty about sleeping with another girls bf and enjoying it, also wishing he was my bf. help anyone?

You can't help the way you feel about the guy but it probably shouldn't have gone that far. What he did was cheating and yea it was wrong. You should have told him how you felt and see if he felt the same and then he could have broken up with her. I'm not judging because I know how it feels but that's why I'm telling you. Hope you get this figured out.