The Avengers star shares three children with his wife Sunrise

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Sunrise Coigney; Mark Ruffalo
Bella Ruffalo
| Credit: Sunny's Pop Instagram; Ben Gabbe/Getty Images

Happy birthday, Bella!

On Monday, Mark Ruffalo's wife, French actress Sunrise Coigney, celebrated their eldest daughter's 16th birthday with a heartfelt tribute shared from the mom of three's home decor Instagram account, Sunny's Pop. The post featured three photos of Bella wearing a colorful jacket, orange hat and sunglasses while standing beside her bike in front of a grassy landscape.

"Perpetually in awe and wonder over you," wrote Coigney, 48. "You're a force of nature my love. Happy birthday Bella Noche. 16 today ❤️."

Coigney has been married to her actor husband, 53, since 2000. In addition to Bella, the pair share son Keen, 19, and daughter Odette, 13.

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In a November 2019 interview with PEOPLE, Mark admitted that balancing his career with life as a father of three isn't always easy.

"It's intense," the Avengers star said at the time. "The times when my wife is gone and I've had to take care of everything  … the laundry alone is enough to destroy you."

He also praised his wife for shouldering more of the responsibilities at home, calling her "just a hero."

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Mark Ruffalo and family

In February, Mark was joined by his family, sans Bella, when he virtually accepted the Golden Globe for best actor in a miniseries or television film for his dual role in the HBO miniseries I Know This Much Is True.

Sitting beside Coigney, Keen and Odette at home, the actor thanked the Hollywood Foreign Press and HBO in his speech, before thanking his family, "who lets me go off and bring these crazy people home and they have to live with all these years. Thank you, guys."