QS: I agree with SR in that if you obsess over this stuff, it will really hurt your ability to GAL. Only you can know if this is an emotional obsession or a necessity to keep the upper hand. Perhaps Allen or Puppy can help with that. Give it some thought though!
I've been there, done that... and I know that personally, I was much more capable of GAL and keeping the PMA when I was no longer trying to figure out what H was or wasn't up to. And I'm referring here to the past, with 1st H (who DID take active steps through divorcing me, btw, then wanted me back) to current H, with past cyber-affair and current sitch. Just my opinion but I do have some experience here.