A man I've been seeing likes mff threesomes. An older girlfriend of mine is the other participant. The boyfriend enjoys watching us, but sometimes it's very annoying to me the way he comments and says things. It distracts me very much. I'd simply like to hear nothing at all while having sex with her. I like to be subservient to her, and she really knows how to arouse me, but his comments are ruining it. He's an older guy and I'm afraid to hurt his feelings. Some advice?