In April 2007, Walsh began dating 20th Century Fox executive Alex Young. Young proposed to Walsh during a trip to San Francisco, California. They married on September 1, 2007 at the Ojai Presbyterian Church in Ojai, California. On December 11, 2008, Young filed for divorce, citing irreconcilable differences; the official date of separation in the divorce petition was listed as November 22. On December 24, 2008, Walsh counterfiled for divorce, contesting the date of separation listed in Young's divorce papers. The divorce was finalized on February 5, 2010.