Rachel Bilson Shares Rare Pic of 'Super Daddy' Hayden Christensen in Honor of His 36th Birthday

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Happy birthday, Hayden Christensen!

The Star Wars actor turned 36 on Wednesday, and his longtime love, Rachel Bilson, couldn't help but celebrate the occasion with a rare Instagram post of her beau.

WATCH: Hayden Christensen Gets Standing Ovation at First ‘Star Wars Celebration' in 15 Years 

"Happy Birthday Handsome ❤️ we love you so much #10yearsandcounting #superdaddy #birthdayboy," the actress captioned a close-up pic of Christensen. 

RELATED: Rachel Bilson Posts Rare PDA Pic With Boyfriend Hayden Christensen

Bilson, who shares 2-year-old daughter Briar Rose with Christensen, is notorioiusly private about her personal life, though did share a sweet kissy snap with her man two years ago. 

WATCH: Rachel Bilson Is Returning to TV -- Details on Her Exciting New Gig!

ET caught up with Bilson in November, when she gushed about learning "patience" from her little girl.

"It's just the most rewarding job in the world and it's the hardest job in the world, so I have so much respect for moms that do it on their own," she said.

See more in the video below.