I am not that far along but here is my stats. BD1 in Feb 2017, left home March 2017 (and pretty much moved in with OM but not constantly) since then. Started angry, basic rewriting, ILYBNILWY, then never loved you. We would see each other on and off initially every month or so, then she disappear for 3 months. Reappeared after reaching Jan 2018, touch and go, with more time spent together, reconnecting a little. Then Aug 2018 came home after we both were traveling and said we should go our separate ways out of the blue (after admitting being in "love" with OM a couple of months back and thanking me for being patient). She had been coming back from shark eyes and total disconnect, but at that time reverted all the way back to cold, calm shark eyes, but no anger.
Barely any communication since then, will avoid actually talking on phone. Only sends texts sporadically, mostly if she needs something. But once or twice sharing things that are important to her.
But no progress or talk of divorce. So basically disappeared.
Me, I am just living my life as if she is not coming back. But still have empathy for the pain she is in.