I have a fetish for aliens from another planet. I fantasize about being caught by aliens and then finding out how different they are, up close and in person. Usually this is a seduction, but not always.
There are almost zero mention of men and alien women. I did look, quite hard, on Google last night. But, I did find some pretty good comic book covers, most show women being carried off by aliens.
Why do I have this thing for aliens? I don't know. Maybe it's about really, really, really kinky sex. You never know what those alien boys have under their space suits.