It's back to the real world for Grey's Anatomy Season 8, Episode 14: "All You Need Is Love." For many of the Grey's couples, love is in the air this Valentine's Day. Owen (Kevin McKidd) and Cristina (Sandra Oh), however, are falling apart. In this preview for the episode, Owen declares he's moving out. We're crying already.Also? A car runs into the hospital. Love, heartbreak, and crazy medical emergencies: It looks like Valentine's Day will be another regular day at Seattle Grace-Mercy West.