read that last post about her getting angry when you mentioned your fantasy about the threesome and having another woman, there is gold to be discovered in that.
- the fact that you're thinking about other women when she is having an affair with another man, it's ok for her but not ok for you, do you see that?
Start dating. She filed divorce papers and only comes over for sex. That's reality, she is telling you loud & clear that she doesn't want a real relationship with you, so agree with her and tell her that the sex will stop also because you've recently met someone and you don't want to be having sex with your wife while you are starting a new relationship with another woman.
Tell her straight, "...you had your chance and you chose to have an affair with another man, I stuck in there as long as possible hoping you would eventually change your mind but all you're doing now is coming over sex and having a good time at my expense, I don't know how often you see the OM and how often this happens with him, I don't want to share a woman with another man and since you can't make a decision to turn this marriage around I'll make the decision for you. We can't have sex anymore, we'll go through with the divorce and I'm looking forward to a possible new relationship with this new woman I just met."
And leave it at that.
Let her do the rest of the work after that, and if she doesn't, seriously BJ, it's time for you to move on, observe reality, if she doesn't want you, she doesn't want you, no amount of hanging in there and being a great guy who gives her sex when the OM isn't in the picture isn't enough for you, it wouldn't be enough for most real men. Time to see this for what it is and move on. You can handle it.