Celeste, Perry, and the twins are coming back from Canada.
They're flying business class, obvs.
Everything is great. Perry is relaxed, and Celeste thinks about how crazy-attracted to him she is.
Perry mentions how he's going to make the new year great for Celeste.
Maybe she doesn't have to leave him, she thinks.
At the end of the chapter we get a snippet of dialogue from a neighbor, who recalls thinking about how attractive, in love, and successful Celeste and Perry seem.