The 39-year-old actor, whose divorce from actress Anna Faris was confirmed in November, has announced his engagement to Katherine Schwarzenegger.
Last month, Pratt confirmed his relationship with Schwarzenegger, the daughter of politician and actor Arnold.
And now he has posted 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!”
The post also featured a picture of the couple embracing and Schwarzenegger wearing an engagement ring.
The couple are said to have been dating for around seven months, after Jurassic World and Guardians Of The Galaxy star Pratt split from his wife.
Pratt and Faris married in 2009 before calling time on their relationship in 2017. They have a six-year-old son, Jack.
In a post in December, Pratt marked Schwarzenegger’s 29th birthday by sharing a picture collage of them together.
He captioned the post: “I’ve cherished our time together. Thrilled God put you in my life. Thankful for the laughs, kisses, talks, hikes, love and care.”
Chris Pratt announces engagement to Katherine Schwarzenegger