Meredith Grey (Ellen Pompeo) makes out with Owen's sister's ex husband Nathan Riggs (Martin Henderson) on Grey's Anatomy season 12, episode 23 (At Last).
Promotional foto's from Grey's Anatomy 10x12 "Get Up, Stand Up"...airs on December 12th. 2013 Grey's Anatomy 10x12 "Get Up, Stand Up" -- On the dag of April's wedding, the Grey Sloan Memorial doctors are all preoccupied with their own drama...
