There's no shame in loving to be naked :)

This seems absolutely ridiculous to me, but it is an opinion shared by many females I know, that guys tend to imagine every girl they meet naked.
Surely that is perverse and disgusting and even generally untrue?

We have been living together for almost a year now, right now we are not doing so well and last night when I was going to do laundry a picture of a naked girl that was obviously from a website, fell out of his pocket. I asked him why he had that in there and he said he was bored at work. I am upset. Is this normal? Does this mean he isn’t that into me?