>>725080550
He has alien genitals, which could mean any number of things.
Just as an example, in Babylon 5 there is a race that has six tentacles on the male's back, and it is intended to go into six slots in the female's back. You need all six to impregnate, anything less is just foreplay.
I'm not saying that's true in this case, but it should give you an idea. He's not compatible, he may not even have a 'dick' as we think of one.