Please help me out with this guys mainly?

I have a look at other girls and have been with my fiancee for 3 years. She points out good looking girls and says "there you go, have a look" she thinks its funny, especially if i am trying to do it without her noticing, main things i he is with you, looking means nothing, everyong does it. Guys sometimes get the shits when we get accused because we (i) dont see an issue with having a quick look, the same goes for her (couldnt care less if she checks guys out). Next time you guys are out, have a quick perve on a guy, if he doesnt loke it and says something, let him know thats how you feel when he looks at her.