Your ex-wife is now married. Do you now want to be the OM?
It sounds to me like you ex has discovered that the grass is not only not greener, but it is full of weeds.
You have to decide what moral route to take.
She is a married woman now.
Take the high road.
Me: 46 H:44 Together: 25 years Married: 20 years Separated: 11-30-06 Divorced 12-21-07 OW: EA began 2005 PA began end of 2006 3 children,20, 16, 6 ex asked for forgiveness 01/16/11