On the episode guide on Mike's page, there's a comment about George's girlfriend, in The Outing (episode 57). Here it goes:
Kyle Westphal notes George's comment about having to wait for his girlfriend to die. Of course, she becomes his fianc�e first and then she does die, in "The Invitations."
Here's how the story goes:
George: Allison bought it for me. Jerry: How you gonna get out of *that* one? George: I dunno. I guess I have to wait for her to die.
He's talking about a sweater she bought him. Well, Allison is the one he's waiting for to die, and Susan is the one who ends up dying.
I know it's an old comment, but I thought I'd make the remark anyway. I also know Mike didn't type this himself and probably couldn't spend all the time needed to verify all the ''facts'' posted there