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Nathan Fillion in Castle season eight© getty

We're wishing The Rookie star many happy returns!

The Rookie's Nathan Fillion shares surprising video of former Castle co-star

Emmy Griffiths
TV & Film Editor
March 28, 2023
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Nathan Fillion has shared a message for his birthday, saying that he has "never been happier" while reflecting on how fast time is passing. He added that it reminded him of what was "really important" in his life.

Sharing a video of his friend and former Castle co-star, Seamus Dever – which had a surprising ending, as you can see below - he captioned the post: "As I grow older, I notice time moves differently. Much faster than it did when I was a lad. It reminds me to appreciate what is really important, to live in the moment when times are good, and to change the moment when they aren’t.

WATCH: Nathan Fillion was sent the video from his Castle co-star, Seamus Dever

"On my birthday, I like to evaluate and take inventory. To that end, I’ve never been happier. Thank you, all of you, for your birthday wishes, but perhaps we should donate them to the less fortunate? All my wishes have already come true. (And thank you, Seamus, for this video. It made me laugh out loud. A true gift)."

 Nathan Fillion and Seamus Dever at People's Choice Awards © Getty
Nathan Fillion and Seamus Dever at People's Choice Awards

Seamus and Nathan are still good pals seven years after Castle was cancelled back in 2016 after eight seasons. While it is unclear why Castle was cancelled, the circumstances surrounding the show's ending were somewhat controversial, as it was originally announced that season nine would be going ahead, but wouldn't be starring Nathan's co-star Stana Katic, who played Beckett on the hit show.

MORE: The Rookie star Nathan Fillion's secret struggle with ongoing condition revealed

MORE: 5 surprising facts about Nathan Fillion you need to know

Seamus Dever and Nathan Fillion in Castle© getty
Seamus Dever and Nathan Fillion in Castle

In a rare comment about the show's ending, Nathan told New York Post: "It wasn’t the beautiful send-off that I think maybe you could hope for, but it’s the entertainment industry, it’s a business, I get it. I don’t take it personally when a show gets canceled — I can’t take it personally, all my shows get canceled! Look at my resume, it’s a long list of canceled TV shows." 

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