If you are not attracted to men then you are not gay. Being attracted to a woman wearing a strap-on means you are a straight man with a fetish. No problem there. My advice is don't bring that up the first few times you have sex with a woman. You are going to have to ease into that one. You describe your attraction to a woman's body very thouroughly. I have no doubt that you are straight.

Go out, date women.