I'm inclined to agree with those that say you're either attracted to men or you're not. Perhaps your fantasizing or curious, and that's fine, but that's not the same as being attracted to males. Perhaps the dressing has let you bring out feelings you have suppressed.
Perhaps if you had past experiences with men it would make you more aware of an attraction to men, or for that matter confirmed that you aren't attracted to them. I just don't think the clothes change what your basic attractions are.