Is it normal i define myself as straight?

I feel my mind is both male and female like a mental hermaphrodite, generally and sexually. But not in an equal amount, so I could say overall it has a major gender and a minor gender, Sexually speaking, I have male urges towards women and I have female urges towards men (but one of these is the strongest of all my sexual urges). I also have female urges towards women, and male urges towards men, and urges towards those whose genders are unclear or undefined from a perspective of genderlessness myself. I really like androgynous looking people, especially boyish girls.

When I feel I am the opposite gender, sometimes it's a passing feeling and other times I'd like to go out for the evening dressed as the opposite gender and hit on the opposite (same) sex. For example, this would be like if a female went out dressed as a man to hit on women, this would not even be a gay act really but more of a heterosexual one I think. I also feel sexually engaged with things (that are not people) especially at night like trees, lakes, the moon, the smell of flowers, wet earth and just the night-time itself. I think I wrote a similar post to this not long ago, so you may know who I am, but anyway. The question is how would you define my sexuality? Do you find it odd that I think of myself as a straight person who is a complicated in every way, including sexually? I have only had a serious romantic relationship with someone of the opposite sex and don't think I could feel that strongly in a romantic way to the same sex.