okaaay, just to chime in with my thoughts on all this, is basically, I haven't known if I have ever met another post op, of the F/M variaty, I expect they should appear as they should as 100% male, and yes if they are attractive I'll fancy him. If I dated, one and didnt suspect, and was told such, of course I would be just as shocked, as if it was me telling a cisman, who would give me the same treatment.
I of course wouldnt reject the f/m at all, but it would enhance my relationship with them even more.
Do CIS accept even post ops as their chosen gender, in most cases NO. They don't, get it, or will understand, but feel in their own sexual identity in which they set themselves, as who they are, can't feel comfortable with sleeping with some one who used to be some thing else. No Idea why this is, after all were just correcting a birth defect.
But generally this is how it is.. But yes there ARE some but not many straights who will date you.
Catherine x