Addison dating private practice
Derek used to ride a motorcycle, but after an accident that gave him a scar, he stopped doing so. Derek's childhood best friend was Mark Sloan, who came from a wealthier but emotionally deficient background, and was like a second son to the Shepherd family.
Violet Turner (Amy Brenneman); confident alternative medicine specialist Dr.
Derek later learned that they continued to see each other after he left.
Part of the reason Mark moved to Seattle was to try to continue his relationship with Addison.
Addison was romantically linked with Kevin Nelson (played by David Sutcliffe), a police officer, but later realized their relationship was going nowhere.
Towards the end of the season, Addison falls in love with cardiovascular surgeon Noah Barnes, who as it turns out, is married and is expecting his first child.