Separated and W has a BF.

[soul_mate]

I still think if she talks to you about her R w/ OM, I would say something along the lines of "W, I enjoy that we can still talk, etc., but you talking to me about OM hurts me a lot b/c I still love you."

I agree 100% with Red on this. It's not fair to you for her to talk about him to you tell her this. She is causing you pain you don't need when she tells you about him. And this is causing you to react in ways that don't help your cause.