Susan's Slave said:I think Don just overplayed his hand and that will work in your favor. Sue made it quite clear that she determine who she has sex with, and that she will look to you for input. If she chooses to expand her boundaries by allowing another man into the picture she has made it clear that it will be her choice, not Don's, and she won't do it without your approval. You have one very awesome woman sharing your life!
I don't think Don just overplayed his hand at all, I think he's been doing it all along. He did it with his request that Sue pierce her nipples for him, he did it with his request that she no longer allow STB to cum inside her, and he did it with the way in which he mismanaged the bed situation.
Many women have a primal sexual attraction to bad boys, equating them with fun times, and Sue seems to be one of these. But she also seems to be fully aware that the qualities that make for hot sex with a BF/FB would translate very poorly to a long term relationship. I do have to agree with Susan's Slave that you have one awesome woman sharing your life, STB.