When Dale returned from the bookstore, Riley and Sarah were in the living room, still in their pajamas, chatting animatedly.

Dale doesn't want to be pessimistic but it seems that they're up to something. Have they realized he's already looking for new roomies?

Riley went back to her bedroom, now she's the one who has to hurry because her class starts in a few hours. So does Dale's, but he's already dressed and ready, so he's going to read the book he just bought. He wants to learn the Mushroom Omelette recipe quickly, so he can make it for breakfast before he leaves. But Sarah stayed in the living room, playing video games, and Dale had a hard time concentrating with all that noise.