Lily: Hey, where's the picture of Marshall and me at the pier? Didn't it used to be by that window?
Ted: Oh, yeah, he, uh, he sort of took it down when you left. Put it behind some books, I think.
Lily: Oh, well-well, maybe I should put it back up.
Ted: Why, so Chloe'll see it and get scared off?
Lily: No. So Marshall'll see it and feel guilty.