Oh my goodness, your sitch in some ways is so similar to the dynamics my hubby and I had. I can not go in to all the comparisons it would take too long.
Just us both wanting to separate at different times, my no longer looking as good as I used to, etc., no A, just lots of hopelessness and disappointment in one another, bad communication.
Anyhow, ours was pretty darn bad. Slowly getting better though...
M38, H37 S3, S7 Together 15 yrs Married 8 yrs Bomb July 2008 Inhouse separation "I hate you" "We are over" (too many times to count) Reconciled Sept 2009 (still worth it)