OK, the most obvious choice here is that Kevin and Sophie get back together (again) and start a family. Though Sophie tells Kevin she is engaged to someone else when they meet up in NYC, it's clear that they still have chemistry. They were each other's first loves! While the two seemed to go their separate ways after their coffee date, the show's creator Dan Fogelman made it seem like their story isn't over quite yet. "I think there's more to explore there between the two of them," Fogelman told Glamour. As for whether she'll appear in season four, he teased, "You never know. It depends on what happens."