liza - I assume your female, and that it is a female butt you aare offering him - so where is the gay bit? Even if you buy one of those tasty strap-ons and show him what its really like, it's still a female making love to him.

If he won't listen to that reason, is he an admirer of Winston Churchill by any chance? From another thread, here is Winston Churchill on anal sex (sodomy) -

"It is impossible to obtain a conviction for sodomy from an English jury. Half of them don't believe that it can physically be done, and the other half are doing it."