Mischa Barton and Boyfriend Split

Frazer Harrison/Getty Images for BritWeek(LOS ANGELES) — Mischa Barton is single again after splitting from boyfriend Sebastian Knapp.

E! News reports the O.C. alum and Knapp, who portrayed John in The Bible miniseries, initially started dating publicly in mid-2012.  A source said the two broke up “a few months ago.”

“It was amicable,” the source continued.  “She is concentrating on her new projects and is in production on a new film.”

Barton is currently filming the Wes Miller-led thriller Beyond Justice.  She stars opposite Vinnie Jones and Danny Trejo.

Previously, Barton has been linked to singer Luke Pritchard and Whitestarr frontman Cisco Adler.

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