It's a bold statement but I have my own experiences to validate this for me.
Pre-2005, I was totally homophobic. I was a guy's guy; albeit, with a crossdressing past. Seeing men make love or kissing is revolting to me then, and yet, still now.
However, ever since I accepted and decided to pursue the goal of becoming a woman, when I'm in girl mode, I'm totally into guys. I still find kissing men hard to do, but it's becoming easier, and I can only do it when i'm mentally a girl.
Now when I'm in male mode, I don't think of guys at all. Since I'm mentally male at work, my mind is mostly focused on tasks. Around work, I kid with the best of them, and find women physically appealing; though my sexual desire is definitely towards men--and that's only "on" when I'm in female mind mode.
I was never into men. never ever ever before my acceptance and desire to become woman. Jeebus sakes, I have 40K porn images of women on my hard drive (sadly, collecting digital dust).
Oh yes, I'm NOT on hormones. All this change has been taking place within mind only.
I always joked back in the day that if I WERE to be a woman, I would be a lesbian, but the opposite is bearing out. I'm much more interested in straight men (who like transsexuals) than I am in women, transsexuals or gay men. I mean, it would be best if I could find a woman that liked M2F, but for some reason, that relationship would seem to be unfulfilling.
I think I also have the answer to that. To me, it seems that if I were to date another woman, I would still be the male in that role--a role that I don't wish to have anymore. Perhaps that is a clue. I don't know. Any thoughts out there on this?
One final thought. Now, when I see a pretty woman, instead of thinking I'd like to make out with her, I'm looking at her clothes, her mannerisms, listening to her voice, trying to pick up what qualities of that person I can emulate. Though I still find women darn sexy, it's now more of a sisterly thing.
I took the red pill.. the red pill!!!!