Uncovering the New "Her" Mystery on This Is Us: Who Is Kevin's Fiancée in the Flash-Forward?

While Madison hasn't really had much of a story arc other than being Kate's best friend, it appears that she and Kevin sleep together when he returns home from Sophie's funeral. Not to mention, during the "The Waiting Room" episode, Madison shares a sweet moment with Miguel about struggling to find a place within the Pearson family. A Reddit user also pointed out that Kevin's rocky interaction with Madison at the hospital could be the show setting up a way for him to apologize and eventually get to know Madison better.