as others have said,
the call was made, it's over now, whether it was a good or bad decision no longer matters....
as they say in the rooms...
"do the next right thing"
in my opinion, that might be to get help (counseling etc...) with your sons
(forgive me if that's already happening...senior moments cause me to forget details of each story...probably because there are so many and all are sad in their own way)
my concern is not so much the recent contact with AH but rather the abusive situation with your sons....
please take care of you and be gentle on yourself
you deserve to be treated kindly and if the men in your life are not doing that you need to do whatever you can to make it happen
your AH is probably not the one who can help with this but a therapist or family counseling etc might
(((prayers)))