Glad to see you made it over to piecing. I think that some of the issues you face in terms of communication, assumptions and even sex might be things that others are seeing in their own sitches too.
One way or another you are among folks here that went through the split and then came back together (or are in the process of doing that). Certainly their insights will help you avoid the pitfalls that will make go "2 steps forward, 2 steps back".
Hang in there z. You are way ahead of a lot of folks here and, unlike many, you still have a real connection you can work on. That's a definite positive. Remember that!