From a reliable source

"ALLEGEDLY"
Chad Michael Murray has ditched that barely legal homewrecker, Kenzie Dalton. Now he wants Sophia Bush back and showed up drunk at her apartment in the middle of night.
The source? A friend of a friend of Bethany Joy Lenz's hairdresser.

Pictured above is the couple back in 2005.

ONE TREE HILL premieres on Wednesday, Sept. 27 @ 9PM (CW).

Source1, Pic