Does it make me a lesbian if I find a transvestite/third gender person attractive?

This guy who's a cousin of one of my best friends is a transvestite (he says he doesn't believe in gender so he doesn't view himself as male or female). Sometimes he wears like fake breasts, high heels, and skirts (not all the time) but that's when I find him the most attractive (even when he dresses like a man, he has waist length hair and he looks like Adriana Lima in the face but with blonde hair and a flat chest). His body is pretty androgynous looking (if you saw him in jeans and shirtless, you'd probably assume him to be a flat chested woman with a very curvy waist). I don't know if I see him as a male or female (he doesn't really give off a "gender vibe"). I don't find other girls attractive so this is not a common occurence for me. I'm just wondering if that makes me a lesbian? (I'm not freaking if I am, I'm just curious for opinions).