The guessing game really never ends on This Is Us. After giving us some answers about Rebecca in the flash-forward, the season three finale opens a whole new can of worms with the revelation that Kevin is now a dad. As Randall sits in the kitchen with Beth and adult Tess, a mini Kevin can be seen walking around the house looking at his phone. While the young boy tells "uncle Randall" that his dad stepped out to get takeout for everyone, there is no mention or sight of his mother.
However, in the season four midseason finale, we learn that Kevin is engaged as he celebrates his 40th birthday. Meaning that Kevin just might be married in the flash-forward. Naturally, we have a whole lot of questions about this new "her" mystery. Does Kevin get back together with one of his past loves or is the mother of his child someone new like the recently introduced veteran Cassidy? Let's break it down.