Hi Embarrassing, welcome to Psych Central.

Some men do develop an obsession with seeing women naked. And that's why Magazines like Playboy were so popular with men. Hugh Hefner certainly got very wealthy when it came to getting women to display themselves in his magazines and hang around his playboy mansion.

I doubt this man's desire to look at naked women is going to change. It's understandable that it makes you uncomfortable. Yet, men are pretty much set up to be attracted to women, unless ofcourse they are gay and even gay men can see women's bodies as attractive which is why men get into fashion design.

With some men it's like being all about cars and how they love being around all different kinds of cars. They tend to have this interest all their lives.

Did you ever sit and talk to him about why he likes it so much?