Add me to the list...
Just about 10 years ago I hooked up with a pre-op. What was supposed to be a one-time experience turned into an 8-month love affair.
That first time I was surprised at how easily it was to be comfortable around her. She looked, talked, walked, and smelled just like a chick. We related just the same way I have with any other girl; with the exceptions that she had a dude's sex drive and didn't go in for a lot of the emotional BS that many chicks do.
Once we were sitting in a hottub with her facing the other way and leaning against my chest. She noticed I was comparing the size of our hands so she quickly pulled hers back and said, "fuck yourself." That was the end of it - just like a dude. With a chick that would have ruined the whole night.
Anyway, she didn't live as a woman full time and it took her forever to get ready to see me (you can imagine.) I was in love and convinced her (against her better judgement) that I could handle it if I saw her dressed as a boy - if we wanted to meet for a quick lunch or something like that.
Well, she had been right in the first place because it didn't take long before I could no longer maintain the illusion. In my mind I started to see her as "a boy" and that wrecked the relationship for me.
Now I know that I've never been attracted to masculinity (as Redsam put it) but the fact that there was a cock and balls bouncing off my stomach every time we were together never bothered me.
Obviously I'm not 100% str8 on the Kinsey continuum. But you can't say that makes me gay in the same way as someone who want's to be romantic with men for the rest of his life.
So I prefer the label, "tranny chaser"