Cassidy Is Kevin's Future Wife
When Morrison was first cast on the series, one of the first theories fans had is that she would eventually be playing Kevin's love interest and the eventual mother of his son in the future. However, now that we know more about Cassidy, it seems less likely. Cassidy seems very adamant about getting her life together so she can return to her own husband and kids. Although, you never know what twists and turns This Is Us will come up with. As she helps Nicky overcome his issues and grow closer with his family, maybe she'll grow closer to Kevin as well.