I can't speak to the marriage stuff. But the relationship aspect is familiar to me. Some of us come out of it pretty raw and pretty maladapted to things. If the sudden end and silence is a shock, then see it as a really unhealthy continuation of what happens to us when we leave and our whole lives are suddenly cut away from us. Both coping mechanism and behaviour drilled into us as perfectly normal. If we're trying to stay in and have something outside, that puts a horrific strain on things. But that's how it is.
Some stuff sounds not really JW specific, I know from friends who've never been JWs that they've gone through divorces/breakups with someone who they then realised they didn't want to be with once the situation had changed. But I don't personally have experience from either side of that.
Good luck for the future. You're right that some ex-JWs carry stuff which needs working through, but others don't. Even with culty background stuffs, we're still individuals ;)