As a source toldE!

Newsback in 2018, Shriver and Pratt knew each other first thanks to some mutual friends.

Shriver’s daughter connected with Pratt at church.

Maria Shriver, Patrick Schwarzenegger, Katherine Schwarzenegger, and Chris Pratt at a Netflix premiere

His romance with Schwarzenegger was a whirlwind, from meeting in 2018 to marriage in 2019.

They have formed a tight-knit family unit that extends to the in-laws, especially between Pratt and Shriver.

Evidently, that bond was there from the start.

Chris Pratt and Katherine Schwarzenegger

“Chris always seems very comfortable around [Schwarzenegger’s] family.”

An insider revealed to People that Pratt seamlessly integrated into the Shriver-Schwarzenegger family dynamics.

“It’s like he is part of the family,” the source noted.

Chris Pratt with stickers on face in a selfie

The family spent the morning playing football and having fun, followed by a festive Thanksgiving dinner.

Katherine Schwarzenegger and Chris Pratt welcomed their first daughter, Lyla Maria, in August of that year.

When Shriver received her vaccination, she was allowed more visits and her connection with her beloved granddaughter deepened.

Maria Shriver at an event

Pratt has fully embraced being a “girl dad.”

Her house … is like a welcoming retreat."

Of course, Shriver knew Pratt before he began dating Schwarzenegger she was matchmaker, remember?

Chris Pratt and Katherine Schwarzenegger on a date

but throwing a romantic relationship in the mix can change things.

Luckily for everyone involved, it was smooth sailing right away.

Pratt and Shriver quickly forged a strong bond that has since blossomed into a cherished friendship.

Chris Pratt posing

In July 2023, Katherine shared glimpses of a special vacation with her daughters and Shriver.

Pratt’s mother-in-law, Maria Shriver, took to Instagram to staunchly defend the actor.

On top of that, Shriver more or less broke her own “rule.”

The Pratt-Schwarzenegger family at an event

As Pratt said in his aforementioned chat with Hoda Kotb, Lyla loves to visit her grandmother.

“I have my own little private thing going on with my granddaughter,” she said.

“I’m in awe of you always.

Timothy Shriver, Maria Shriver, and Anthony Kennedy Shriver at a Best Buddies event

And as for Shriver’s nickname?

Lyla’s to thank.

“Lyla, when I walk in a room, she’s like, ‘Mom!

Maria Shriver at the White House

Shriver shared on “Today” in 2022.

“I don’t know why she calls me Mom.

In 2016, Pratt made a surprise visit to Seattle Children’s Hospital.

Chris Pratt and Katherine Schwarzenegger

In 2018, he visited a Ronald McDonald House, offering support to families of ill children.

Shriver, known for her dedication to Alzheimer’s research, embarked on a mission close to her heart.

The MOSH Plant Powered protein bars were unveiled on the eve of World Alzheimer’s Day.

Chris Pratt and Katherine Schwarzenegger

As theDaily Mailrecapped, Chris Pratt proudly joined his mother-in-law and brother-in-law Patrick Schwarzenegger at the launch party.

Pratt, known as a blockbuster film star, is also renowned for his openness about his faith.

It’s all about timing.”

Chris Pratt and Rob Lowe

Shriver echoes these sentiments in her journey towards Christianity.

I was like, sobbing.”

Shriver, ever the supportive mother-in-law, extended her warm wishes in the aforementioned Instagram comment.

“Bravo to you both!

I’m so happy for you, for your children, for all who know and love you.

Your love inspires, your kindness elevates others, and your compassion moves us all,” she wrote.

“I’m so happy you have one another; love looks good on you both.

The exchange captured the essence of a family united by love and shared joy.

Turns out, it wasn’t just for the cameras.

AsPeoplereported at the time, the former costars hit the links with a small group hours before the ceremony.

Lowe’s friendship with Pratt’s mother-in-law, author and journalist Maria Shriver, goes even further back.

As Lowe noted on an episode of his podcast, “Literally!

With Rob Lowe,” he and Shriver have been pals since the early 2000s.

As Schwarzenegger told Lowe on a separate episode of “Literally!