One Tree Hill is nearing its long-awaited series finale -- and not a moment too soon for CW star Sophia Bush, 29.
PHOTOS: Shocking star splits
The actress has split with her on-and-off beau of six years, Austin Nichols, 31 -- the third guy she's dated from the just-wrapped TV hit -- a source tells the new issue of Us Weekly (on stands Friday).
PHOTOS: Ugly celebrity breakups
Bush broke it off with Nichols (who plays her husband) "because she didn't think he was the one," explains a source. "She's moving on."
PHOTOS: Stars who wed too young
The actress was wed to Chad Michael Murray in 2005 and dated James Lafferty in 2009. The final episode of One Tree Hill airs April 4 on The CW.
Tell Us: Are you surprised Sophia Bush and Austin Nicols are over?
Get more Us! Follow us on Twitter, Friend us on Facebook, Subscribe to Us Weekly
Fergie, Sarah Jessica Parker, and Heidi Klum all get an F on this week's Fashion Offenders.
Beyonce and Alicia Keys double date with their famous hubbies on today's Celebs Gone Social.
See what the cast of "American Beauty" is up to today.
Jennifer Lopez shares an adorable photo of her look-alike daughter, plus more celebritots on social media on today's Celebs Gone Social.
Prince Harry, Jessica Alba and more stars who threw out the first pitch at baseball games.
Sofia Vergara poses in a revealing neon bikini while her "Modern Family" castmates hit the beach in Australia on Celebs Gone Social.
Get the scoop on the RHONJ stars' recent whereabouts on Replay.
© 2014 Whalerock Industries