wandering eyes

Courtney
So....I caught my husband looking at another girls butt. She was thin, exotic, gorgeous and had all her 'stuff' hanging out. When I asked him about it, becuz I was standing RIGHT NEXT TO HIM, he told me he was looking because he couldn't believe how short her shorts were. 
I've never 'caught' him looking before...if he looks without me around I don't know about it. I think it hurt my feelings because I was right there. I'm having a hard time with his answer. I mean ya....they were short but lots of other girls had short shorts on and he wasn't looking at them. 
I need advice ladies....I can't get it out of my mind and it's making feel like a sack of potatoes.