No Contact is what finally gave me the time and space to heal. Like Gypsy said, anything other than that is picking at wounds so they won't heal. There is a saying: Does it hurt when you do that? Then stop doing that.
If your ex has made all of these 180s, then know that he is no longer the person who "fits" with you. He may have been, for a long time. But he isn't now. So better that you have gained that space back to first, to Find you, get to know the soul that occupies your body, as an whole, perfect individual
Many hugs....we know, without you even having to say a word.