Hi Kas, I'm also a straight crossdresser and have no desire to be with men. I've been out as a CD to a few different women and have been fortunate enough to dress in bed with all of them. They were all accepting, and one of them was especially into it.
I think that once you've lowered your defenses enough to come out as crossdresser to a woman, it's just a natural progression to take it into the bedroom. It's really just getting to know what they're comfortable with, then enjoy!