My husband downloaded a picture off facebook of a girl we both know, what should I do?

We went to high school with her and we both kinda talked to her, the picture was of her in a bikini and I could tell he saved it from her pictures because I have her as my friend on facebook. It just hurts me that he would want to have that. If it was a famous person, then ok, I'm sure most guys have those, but someone we actually know feels like betrayal. Should I, and how should I confront him?