We love birthday cuteness! Actor Chris Pratt wrote a sweet and funny shout out for his wife, Katherine Schwarzenegger, on Instagram in celebration of her 30th birthday. The Guardians of the Galaxy star shared the heartfelt words on December 13, his lady’s big day.

“Happy Birthday Katherine!” the 40-year-old wrote over a collage of photos of the happily married couple. “So happy to have you in my life. I don’t know what I’d do without you. Probably get locked out on the balcony somehow and have to live there or be wandering around some city with an uncharged phone and only one shoe, late for work like some kind of anxiety fever dream. I honestly don’t even want to think about it.”

LOL! After the funny guy got a good joke in, he went back to being super sentimental about his gal. “You’ve changed my whole world for the better. I’m so grateful to have found you,” he concluded. “You’re an incredible wife and stepmom. And I’m so excited to celebrate you all weekend!” He even added heart-eyed and heart emojis, as well as a cross emoji.

Naturally, the brunette beauty responded to the sweet post from her hubby in the comments section. “I love you my sweet,” she wrote, adding a heart emoji.

It’s no surprise to see these two lovebirds being cute with each other. At the end of November, they spent their first married Thanksgiving together — and, obviously, it was totally adorable. Plus, the author similarly shouted out her husband a few days before the holiday.

“Today, I am grateful for this bike ride with my wonderful husband and seeing the colors of the fall leaves,” she wrote on a photo of Chris while biking. “While we were riding our bikes, he said let’s give out real honest compliments to people we pass and see what happens. We did, and not only did random compliments surprise people on the bike path, they also made us feel good. This also reminded me how thankful I am to be married to someone who thinks of kind ways to make the world a better place.”

Happy birthday, Katherine!