I'm nearly married, and I look at these pictures, and I don't feel bad. I love my GF and wouldn't take any of these women if they were offered to me, but I don't see the problem in enjoying the female form. Once she found my porn pix on the Hdd, and we looked at some together, and she wasn't offended, she even liked looking at some of the pictures of the women herself. ( i say some, as in she isn't really see the interest of some woman with her puss spread, but likes some of the softer "more tasteful" stuff. )
Whatever, I say it depends on how your wife/GF feels about it