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).
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?
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