Agree with the rest about the family. Family will take the side of W and even ignore her faults because they "see" her happy. They want her to be happy so how she got there is of no importance. This desnt mean she is happy or will be happy in the long run, shes just consumed in the new relationship feelings and those chemicals make her think this is the right path.
Keep being there for your children and improving yourself and ignore what W is doing. You have the chance to build yourself up to find true happiness while she seeks it out in the wrong places. It will backfire on her even if you never see it.
Focus on you and those boys, they need you right now.
Accept what is, let go of what was, and have faith in what will be
