Tulloch gave birth to their daughter, Vivian, in February 2019. The two haven't said much about the nearly two-year-old, but they have posted tributes to each other praising each other as parents. Tulloch wrote last year on Father's Day: "Vivian and I are the luckiest girls in the world. I'm so grateful for you and your boundless devotion and love. Nothing matters more to you than being a husband and a father and you show us that in your actions every single day."
Giuntoli wrote on Instagram last year of Tulloch: "She is silly with her. She fights for her. There is a wheel in her mind that is ever-spinning on Viv's behalf (as evidenced by all of the to-do list emails I wake up to). Viv feels so safe and so loved."