Is it bad to feel attracted by other men even if you’re married?

So there are times where i see a guy and i think ‘damn he is so fine’. Or when i’m talking to a guy i notice how cute they are, and because of that i cant help but smile and blush and i try to control it but i just cant help it cause i get nervous and all. So it makes it seem like im flirting with them, but i’m really not you know? I know i wouldn’t do anything to hurt my marriage. I love my husband and i think he is very good looking and most importantly, i am 100% loyal, but i feel bad for thinking other guys are hot or cute, even when I’m talking to them.