In my mind. I can't be a friend at the same time as wanting to be an H while she's with an OM. It just doesn't work that way. I can't "hang out" or chat with someone I'm in love with after being traded in for a new model - not until I'm done wanting to be her H.
There's nothing to say you can't file. But will it REALLY change your R with her? If you were DIVORCED right this second, what would be different?
