In June 2018, an insider tells E! News that the Jurassic World star is "smitten" with his new girlfriend, adding that he's "super happy" about the start of their blossoming relationship.
Chris and Katherine take things to the next level by spending time with the Schwarzenegger family. As it turns out, the one and only Maria Shriver played matchmaker for the couple!
Judging by photos shared online of the these September 2018 festivities, Chris' family and friends welcomed Katherine with open arms as they all posed together for group photos.
Chris and Katherine are all smiles during their outing with Pratt's brother Cully Pratt and friends.
The two hold hands and are all smiles, as they step outside for an afternoon stroll.
The dynamic duo looks over-the-moon in love, during their afternoon outing.
The pair soaks up the sun and spends time with Katherine's family in Hyannis Port, Mass.
The two showcase denim looks as they leave Beauty & Essex after enjoying dinner together in August 2018.
The two ride Bird scooters around her mom's neighborhood in early August 2018.
Nothing to hide here! The lovebirds sport casual looks on a dinner date at R+D Kitchen in Santa Monica, CA in late August 2018.
The two are seen out and about in L.A. after attending a Boy Scout Troop meeting in November 2018.
"Happy Birthday Chief!" Chris, 39, captioned a series of never-before-seen snapshots of the couple. "Your smile lights up the room. I've cherished our time together. Thrilled God put you in my life. Thankful for the laughs, kisses, talks, hikes, love and care."
Congratulations are in order, because Chris has officially popped the question. The duo announce their engagement in January 2019, with the future groom writing on Instagram, "Sweet Katherine, so happy you said yes! I'm thrilled to be marrying you. Proud to live boldly in faith with you. Here we go!"
On the topic of wedding planning, an insider tells E! News in March that the celebs are "taking their time," but look forward to including Pratt's son Jack in the ceremony possibly as a "little groomsman."
The two make their red carpet debut as a couple at the Avengers: Endgame premiere in Los Angeles in April 2019.
Katherine is spotted arriving to her star-studded bridal shower, which a source describes as "beautiful and elegant." Oprah Winfrey is among attendees.
The couple exchange their vows and say "I Do" in a romantic California ceremony.
The Marvel star adorably crashes the author's baking video.
In April 2020, E! News learns that the couple is expecting their first child together. Four months later, Katherine's brother Patrick Schwarzenegger confirms she has welcomed a baby.