Maybe he wants his life to be private. Maybe you need to adjust your agreements with him and trust he will act in consideration of you. Maybe its time to start practicing safer sex with him and letting him go do his thing. I know that might be hard and even seem impossible, but it could be something to consider by discussing it with him. If it doesn't work for you then perhaps he will agree to keep your agreement above board as long as you don't freak out and express your dislike of her. He likely sees some value in their relationship and had a hard time telling you that because of your reaction. Maybe you should talk to her yourself and see what she is like in order to create a different view of her. Maybe its time for a change...
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