My heart beats for one but my mind chooses another

Hello guys, I'm new to this platform..so thanks everyone for being here.. I'm straight forward so I'll say my problem right away. It's been almost two years now since I've been in this..should I say.. situation. Before I started dating my current boyfriend, I had someone who liked me..well, I could guess that he liked me but he didn't say it outrightly. Then, I started dating my boyfriend..needless to say.. I'm confused about how I feel for the other guy. Don't get me wrong, my boyfriend is amazing and I can barely imagine the world without him..he makes me laugh like no one else..has my back in the best way possible..and loves me. My problem now is, whenever I see this other guy I feel drawn to him..and this escalated to the point of kissing him one time..so I decided to hang out with him and find out if we connected..if what I was feeling was right..turns out, we don't connect that much and we don't really have much to talk about..so I went back to my boyfriend, told him about it and he forgave me. So, how do I stop feeling drawn to the other guy so I don't make a mistake that will hurt my boyfriend again? Thanks for your time.