As much as I cringe at some of Brandi's behavior, I also feel for her in her experience with the infidelity of her husband. I have not had to live through that, but I have seen it many times. Brandi: just remember that, although it is exceedingly unfair that the "other woman" may end up with the prize, (loose term for for a cheating man), that woman will always be the "other". There is an inexcusable arrogance and lack of character in a woman, and a man, who hurt others, including their own children, in that way.
If you never get over it, if you always carry a tiny bit of the bitterness that made a scar on your heart because of this wound, no one can hold it against you. The best revenge is a beautiful, happy, balanced life. You have no cloud of guilt hanging over you so carry on and thrive!!