Season 9, Episode 8: "The Betrayal"

-That's it. The wedding's off. -But Sue Ellen--

Elaine, you were my maid of honor and you slept with my Pinter?

No, no. It was years ago, before you met him.

And I gotta tell you, it was very mechanical.

I have never been so humiliated.

Idiots. This is all your fault.

-Me? Him. His fault. He betrayed me. -George, I'm sorry.

You can stuff your sorries in a sack, mister.