When did Chad and Sophia start dating, get married and have a divorce? Also, What exactly happened for them to get a divorce?

They started dating really early on & even kept it a secret for months so definitely season 1. They got married April 2005 after dating a year, around the time they were finishing off season 2, they got divorced 5 months later & the divorce was finalized some time in mid-season 3. The MOST accurate thing I've heard is that Chad cheated with Paris Hilton on the set of the House of Wax.

They god married in April 2005
he cheated on her with PAris Hiltion when they were on house of wax then sophia got a divorce.
they prob got together half way through S1:)

They started dating around season 1 probably towards the middle because Soph said they were friends for a while before anything started happening. They got married April 16th 2005, season 3 was filmed from mid July 2004-April 2005. Season 3 ended but they were still married. They announced they were getting separated on September 26th, 2005, so they were separated/in the process of getting a divorce by the start of filming Season 4. The divorce and annulment Sophia petitioned for was finalized December 2006, during the time Season 4 was on air. Chad admitted to Sophia that he cheated on her which was able to allow her to cite 'Fraud' on the annulment without problems. He cheated on Sophia Bush with Paris Hilton BEFORE he proposed to Sophia. It was during filming of House of Wax when he was only in a relationship with Sophia and proposed to her after he slept with Paris....

Well,I know that they got marry but then they divorce I'm not sure who that chick was...also I know that Chad propose Sophia like writed on the stadium ''Marry me Sophia'' something like that...:)

Chad and Sophia started dating in 2003 and got married in 2005 with the permission of her father and got a divorce a year later because he cheated on her with hillury duff from a cinderella story