Original Commentary
Why indeed?

Modern Commentary
So, was Kimberly thinking of making him sleep in the bathtub? Or on the floor? Or in her bed?
Definitely not the couch. I'm not sure Kimberly actually has a couch.

I love that second panel, where they're both giving the other one a chance to say something, to make a move. But neither one of them does. Because they've got serious trust issues after Unlike Minerva and because the comic is literally called "You Say it First". - Terrence