Yes, he's as much said that. Something about how since it's easier for men to understand men, and women to understand women, that if given the option to marry their own sex, people would not choose to marry the opposite one.

Which makes me raise my eyebrows and wonder "if you think socially approved gay relationships are so overwhelmingly attractive, are you sure *you* are straight?"

It's very wacky logic, to say the least.