I'm very attached to my male naughty bits, as it were, but funny enough, I just said to my wife the other day, if I got a sex change, I'd be a lesbian. It's my way of pointing out that sexual preference and gender are correlated, but they are still more or less independent of each other. Just like you can have effeminate straight guys, you can have effeminate males who feel they should be female but are attracted to women anyway. Not to preach, but there's no reason for them to be suspect over any other combo, IMO.