And his former wife was quick to send her happy wishes.
“I’m so happy for you both!!” Faris, 42, wrote on Instagram, commenting on the 39-year-old actor’s post.
The couple was congratulated by a slew of their friends in the comments, including Schwarzenegger’s brother, Patrick, and her mother, Maria Shriver.
Pratt’s proposal comes almost two years after the actor announced that he and ex Faris were separating in July 2017 after eight years of marriage.
Pratt and Faris settled their divorce in November and each waived their right to spousal support.
They’ll continue to co-parent Jack and stipulated they live within a 5-mile radius of each other until their son completed the sixth grade.
Faris has also found love again and is dating cinematographer Michael Barrett, 48.
Faris was linked to Barrett in Sept. 2017, while Pratt and Schwarzenegger were first spotted together last Father’s Day.