I don't see why it bothers you too much?
If he's watching things with weird fetishes - worry.
Men watch porn. Its common knowledge. The more you put out, the less he'll watch it.
My ex always insisted he never watched it to me. I guess he was trying to be a gentlemen? I made it clear to him I didn't care, and I'd watch it with him if he wanted.
If you're so concerned, send him some pics. Make your own porn?