With only six people in attendance, the couple wed in a small ceremony late last week at a resort on the Big Island of Hawaii.
Green, 36, and Fox, 24, first met on the set of Hope & Faith in 2004 and got engaged in November 2006. The pair broke off the engagement in February 2009, calling the decision mutual, but called it back on just two weeks ago.
This is the first marriage for both. Green has an 8-year-son with former 90210 co-star Vanessa Marcil.