It’s complicated

We are both married. However we have been together for 10yrs. I made a lot of mistakes like taking him for granted & moving countries believing that nothing will change. He is the kindest & most patient person I have ever met. And he my best & only friend. I think he believed that there was no emotion left from my side & decided to move on. I am devastated- it’s day 2 of NC & it’s killing me to not speak or connect with my best friend

You both cheated on your spouses which is disgusting. It’s just wrong on so many levels, especially if children are involved. You don’t need him as a friend. You need to work on your own marriage or get a divorce.