Yeah I would say if you're not being creepy about it, it's fine. I have this battle too (among many others in the last month). We will always "check out" whoever we find attractive. I do, you do it, your girl does it, my wife, everyone. I decided that if I can see a pretty lady and say "wow, she's cute", or whatever, and then dismiss it and move on, that's a way more normal thought pattern than holding on to it all day so I can beat off to it later. It's all good, rockit, keep going strong bud.