Is it normal that im trying to prove something to myself that isn't true

It began with drinks and flirting. This guy and I, who i dont consider a friend really but he knows my friends, were hanging out with others and drinking and ended up hooking up. Ever since, I have that moment in my head that something more can happen and can't get over it. Its weird because before hooking up, like I said, we werent even friends,we were just there and plus he was mean to me and then we hook up? Weird. Im not going to lie though, there was something there I had for him and hooking up kind of just satisfied it so i thought ok its all good now. But now I want more. Lately, Ive been realizing though he isnt worth it, what was I thinking, its just all in my head that something can actually happen with us and its crazy. Im not denying my feelings for him but I want to prove to myself that it isnt important but its funny cause everytime his name is mentioned I instantly get excited so its hard to force myself not to get excited and just move on. I wish it was easy but it isnt. Its also not easy to get excited while thinking he probably can care less. Ive only seen him once since our hook up and he was just smiling at me acting nice and hugged me which he never did since he would always ignore me or be mean to me. As i said before, Im not denying my feelings I dont want to lie to myself that I dont feel anything cause I do but what I want to do is to prove myself these feelings for him are not worth it and move on. Is it possible? Is it normal to feel this way?