i love my partner but sometimes i have these fantasies

I love my partner a lot, and would never cheat on him (even if my fantasy were to be dangled I'm front of my face and he would never find out. I'm faithful. I'm not a slut, and I love him. he's too good to lose as well) but sometimes I wonder what it would be like to be with other men. fuck other men, hell even jsut examine other guys' junk. it's a curiosity, and I have dreams about it sometimes where I'm openly flirting with guys from my past like my lover doesn't exist at all. from what I've read on here, I think it's normal? I'm just curious. I'm really open minded about a lot of things (I.e lesbian sex/relationships, threesomes, different fetishes and kinks) and sometimes that ticks my lover off(more the things that don't involve just him and I). I swear it's all curiousity, and like I said before, I would never pursue or openly accept to participating in fulfilling any of these fantasies because I love my man. I would never leave him, or cheat on him.