Wow. I may be poly, but, I wouldn't touch that dude.
I have run into people who seem to think that if I am poly,then I will have sex with anyone who wants me. Um. Hell no!?! I like who I like, and I don't see any reason to date anyone who is not as awesome as my love and his wife.
This couple does not sound awesome. They don't sound respectful. They do sound manipulative.
Also, any guy who expresses in any way that he feels he is owed sex? I run. This is NOT a safe attitude to be around.