Welcome Back Rob,
Well it sounds like your W has not changed. It is great you are learning to set boundaries, it is almost self preservation! Try to remember, if your W believed half of what she has accused you of, she would not speak to you or allow you to have D. Also, I bet if D is wanting to sleep with you, she is doing the same thing with W. If W can't work with you to present a united front it makes it hard.Maybe you could talk to your counselor about how to handle this with D. That way if your w continued to "accuse " you, you could state you are following professional advice. Maybe this would protect you.