When there are no females in my sexual life, I watch porn. It's not a great substitute for personal intimacy, but it's better than nothing.
Once, when I was talking to my lesbian ESI-Se interior decorator, (with whom I'm in love with, incidentally, and she completely understands this, and maybe she feels the same way about me because we are uncannily similar in some ways and we understand each other remarkably well), I said to her that I thought it must be tough, having to select your partner from a smaller-than-normal part of the population, and she said that she had tried to get with a guy once, but she just couldn't do it.
She "just couldn't do it". Huh. Why not, I wondered? I mean, sex is weird enough that changing genitals is probably the smallest factor.
And yesterday, I realized what she was talking about while watching a porn video of an amateur female ESI-Se having sex with her Victim male partner. The woman in the video was terrible at doing for the guy, but she loved doing to the guy. She acted as if she were a straight man who was making a video with another man in it. It was pretty weird to watch, but as a Te-dom, I'm agnostic about where I get my information.
So, I'm guessing that my interior decorator "can't" have sex with a guy because, if she did, then she'd be the girl, and she just refuses to see herself that way. She refuses.
I read somewhere (probably here, on this forum), that ESI-Se's have a lot of conflicted sexual impulses. I can see that is true from my own experiences with the ones I have dated, and the sexual experiences that I've had with ESI-Se's have not been great for me. They point to the conclusion that ESI-Ses are not my particular cup of tea.