It is unclear what exactly Chad Michael Murray did to Sophia Bush, but their relationship was messy and ended in divorce. Here is a timeline of their relationship based on the search results:

• April 16, 2005: Chad Michael Murray and Sophia Bush got married in front of 200 guests.
• February 2006: Sophia Bush filed for an annulment, citing fraud, but was denied. Rumors began swirling that Murray cheated on Bush with Paris Hilton, but they were never confirmed by anyone directly involved.
• December 2006: Chad and Sophia finalized their divorce. Both parties waived spousal support.
• 2014: Sophia dished on working with Chad post-divorce. Even after their romantic relationship was over, Murray and Bush still had to work together on the set of One Tree Hill.
• June 13, 2018: Bush went into more detail about the pressure she felt to tie the knot. During an appearance on Radio Andy With Andy Cohen, she admitted that marriage “was not a thing .

In summary, Sophia Bush filed for an annulment in 2006, citing fraud, but it was denied. There were rumors that Chad Michael Murray cheated on her with Paris Hilton, but they were never confirmed. Their divorce was finalized in December 2006, and they continued to work together on the set of One Tree Hill. In 2018, Bush revealed that she did not actually want to get married and felt pressure to do so.