Sharing a candid picture of her partner on Instagram, the 35-year-old wrote: "Happy Birthday Handsome ❤ we love you so much #10yearsandcounting #superdaddy #birthdayboy."in 2007 with Hayden popping the question a year later. I'm an emotional person; I go with my heart before my head every time!
The engagement was called off in 2010, but the stars reconciled after just a few months.
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.
Was just talking about Hayden Christensen the other day. Does Hayden get these for free, or does the franchise machine just want to forget about that whole trilogy? Like, you’re in that dead zone between morning and afternoon when the photo agencies are loading up new content and you don’t want to go front heavy, particularly today as I’m trying to pace out my posts for when I fly in a few hours and oh look, there’s a Rachel Bilson story…
Go away for a while – he could afford it with the Star Wars money – and let people forget. Full Story For the 3 or 4 of you who were wondering whether or not Rachel Bilson and Hayden Christensen are still together... And they’re on holiday in Barbados with her family. There’s something here that’s worth observing about their careers, an ongoing discussion.
Rachel Bilson has given fans a rare glimpse into her relationship with longtime boyfriend Hayden Christensen by posting an intimate photo on her Instagram account.
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.
I had forgotten, until Us Weekly reminded me, that Briar Rose, the name chosen by Hayden Christensen and Rachel Bilson for their baby, is a name used as kind of a decoy for Princess Aurora in sleeping beauty. She still loves him even with his full face Full Story I wrote about Hayden Christensen’s new look a couple of weeks ago. Evidently, judging from your emails, this didn’t escape you either. Full Story I almost didn’t recognise Hayden Christensen, here with Tilda Swinton and Chloe Sevigny in Berlin at the Hugo Boss show.
Full Story US Weekly reports that Rachel Bilson is pregnant with Hayden Christensen’s baby.