Wow, well I don't really know what to tell you. You seem kind of "all over the place" in what you want with your ex. I guess my question to you is what is all this interaction with her doing to you? Does it hurt you, or are you detached to the point where you can give her footrubs and have her walk on your back and you don't have any expectations that it means anything? Regarding your question about whether or not to talk about OM my question would be the same- does that hurt or upset you or are you ambivalent about it? Her R with OM is brand new, so at this point there is nothing you can say or do that is going to help your sitch any I don't think, especially considering you were never M'd. So do what is right for YOU. If going dark will help you detach then do it. I think you're having too many interactions with her considering her R with OM, and that she is never going to learn to miss you at this point. But it's your call.