Tulloch gave birth to their daughter, Vivian, in February 2019. The two haven't said much about her, but they have praised each other as parents on Instagram. 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 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."