I'd say your problem is called "being a typical guy... who also happens to be a typical crossdresser".
All guys check out the ladies. We can't help it. When a beautiful woman passes, our eyes are popping and our heads turning before we are even conscious of it. Or so that is how it is with me. I've been busted checking out other women by my wife several times... though I do make an effort not to when in her company out of respect (still slip though).
Being a crossdresser adds another dimension to it. Rather than just admire the woman's beauty, we long to be as beautiful - dressed in what she's got on, looking as gorgeous while going about our day.
It is one of the things I love about being a crossdresser... and pains me at the same time because I know I can never look as good. But I'll still try!