Relationship Details
Celebrity Biographies
Sebastian Knapp dated Mischa Barton in the past, but they broke up in 2013. Sebastian Knapp dated Mischa Barton for 1 year. Sebastian Knapp is currently available.
Entertainment - Actor
Why Famous: Ex-boyfriend of Mischa Burton
Age: N/A
Entertainment - Actress
Why Famous: Marissa Cooper of The O.C.
Age: 38 (b. 1/24/1986)
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Relationship Timeline
| Event | Start Date | Length |
|---|---|---|
| Dating | 2012 | 1 year |
| Broke Up | 2013 | -- |
| Total | 1 year |
Children of this Relationship
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Affairs
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Go To Sebastian Knapp's Profile Go To Mischa Barton's Profile