I'm gay and get hit up almost always by married men. If he watches that stuff and you do nothing to bring it to reality, some men end up looking for it. Once a man relinquishes dominance to a woman like that you are highly likely to have a fantastic lover. But he can't use his willie on you, and can't play with it himself. Maybe for using a strap on you make a deal that he give you oral sex only for the next month, you use the strap-on on him. But for yourself just think of it and appreciate it for the power you have from the act. And a woman possessing a cock is a very powerful thing. They are extremely attracted to women being dominant in the bedroom. I think he is into feelings so many men hide. My guess is that he would really like you to get a strap on and do him. Make him actually participate rather than watch.
You need to get him off from watching that.