"I was shooting the last season and Bradley was in Nashville for songwriting and so we would just get together when we could over FaceTime or Zoom," Metz explained while making an appearance on "Today."
The book's focus is on the power of prayer and implementing it into the lives of children.
Chrissy Metz wrote a children's book alongside her boyfriend Bradley Collins. (Araya Doheny/WireImage)
"Our hope is that it's as well received as it was intended," Collins explained of the illustrated book.
"The book tells you, ‘Yes you can.' You can pray for your pets, you can pray for your grandparents, and no matter how old you are, you can have a relationship with God," he added.
‘BREAKTHROUGH’ IMPACTED ‘THIS IS US’ STAR CHRISSY METZ'S OWN FAITH
Collins says his experience with his ailing grandfather as a child made him question who could pray.
"My grandfather was very sick when I was growing up, and I didn't know if I could pray or not."
Chrissy Metz and her boyfriend Bradley Collins want to instill the power of prayer into the minds of young children. (Weiss Eubanks/NBCUniversal)
In conjunction with the book, the couple has also collaborated on a collection of lullabies called "Prayed for This Day."
Metz is also a singer, singing multiple times in character on "This Is Us," as well as for award shows and independently.
"I taught pre-school and I have a very big family … the way that I was raised, my grandmother always said that singing is like praying twice. And I just thought that was appropriate. And then we were just doing instrumental for the audiobook I read, and then the words and the song sort of just fell out," she said of the album.
"We wrote 10 songs in like 4 days, which is unheard of for both of us," Metz revealed.
Chrissy Metz played Kate Pearson alongside "Big 3" members and brothers Kevin, played by Justin Hartley, and Randall, played by Sterling K. Brown. (Ron Batzdorff/NBC/NBCU Photo Bank)
The 32-page book will be available for purchase on Valentine's Day, Feb. 14.