Speculation circulated for months that Katherine Schwarzenegger and Chris Pratt were together.
However, Chris has only confirmed the blooming romance between the pair yesterday.
Taking to Instagram, he publicly announced their relationship by wishing Katherine a very sweet happy birthday.
Paying tribute to the birthday girl, he captioned a collage of Katherine: "Happy Birthday Chief! 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," Chris added.
Katherine turned 29 yesterday and some of the pictures show just how close the pair have grown in recent months.
The stars were first spotted in June on a date, but they have been a couple for a significantly longer period of time according to RadarOnline.
Chris and his former partner Anna Faris confirmed their separation in August 2017.
They share a son together, six-year-old, Jack.
Anne has also found love and is currently dating cinematographer Michael Barrett.
