"God didn't promise you that life would be fair but that He would be just."
Yes, you are the responsible adult right now and need to act accordingly. You want to be able to look yourself in the mirror and say that you handled it the way a strong and honorable man would. Your boys are looking at you and they know you are hurting but you are modeling character traits you want them to have in their lives. You can handle it.
Cheers
M22,H45,W45 S21/18D12 Retain faith that you will prevail in the end, regardless of the difficulties and at the same time confront the most brutal facts of your current reality, whatever they might be.