The thing is a threesome is different. See your thinking of offering up a threesome as offering up a type of beer to a man, theres a chance he'll like the taste, there's a chance he won't, but either way he's gonna drink the damn beer (i hope you follow becuase i feel a really good analogy in the making and I am excited )

which is close, but wrong.

He will like the taste. And after he's done. He's gonna want another beer.