Cuccoon... There are different kinds of relationships :
1. Short term/one night fling 2. A conventional long term romantic relationship 3. An addictive, taboo, secret infidelity 4. A conventional long term romantic relationship while managing divorce/children from previous marriage
These all have very different variables at play...
A type 3 can turn into a type 1, but rarely if ever gets to a 4... and if there are children involved it will NEVER get to a 2 which is the ideal (many spouses think when they divorce they will get a 2, but its not realistic)
I am trying to establish what we are dealing with here... You aren't involved with anyone? What is the state of OM with you?
Does he still have your phone number? Does he know your address? Is he gone out of the picture completely?
The status of your OM and his OW are both important here...
I suspect your H is just escaping to try to avoid the pain... It's a common tactic, but it doesn't work...