Heh! Here it is:
"By the way, I don't think she was always a liar, the way some kids are born liars and never get over it. I think she was once a truthful person and her lying skills were forged in the early years of her marriage, forged in the crucible of Bill's infidelities and in her role as point person in dealing with them. This is what happens when you marry a narcissist: he spills the milk, you clean it up and your love grows. And then you end up a liar, just like him."
It's from a column by Nora Ephron:
Nora Ephron: Hooked on Hillary - Politics on The Huffington Post