AV8R, I've been following your sitch as I try to learn on this BB. My condolences for your loss.
If it brings any comfort then know that this new relationship is built on feet of clay. Imagine being in a relationship that is built on lies, deceipt, and oathbreaking. These aren't people to hate, they are people to pity. Through their actions they've shown themselves to be subhuman. Lacking in the capacity for for true love.
Focus on your kids. They will need your love and guidance. Their mother has not only deceived, lied and cheated on you, she has done the same to them.
From your posts I see that you have a lot going for you. You're quite the catch and after you're done grieving I can imagine the flock of ladies that will be available for a ride in the sky.
Today is the first day of your awakening. I hope you have nothing but clear skies and tail winds for the rest of your life.