After 10 years apart, Nathan decides it's time to re-propose to Megan Hunt (guest star Abigail Spencer). In the middle of his proposal, Meredith rushes in to tell Megan she found a donor, but awkwardly stops when she realizes she's interrupted Nathan's proposal. Watch this scene from Season 14, Episode 2, 'Get Off on the Pain' and don't miss Grey's Anatomy THURSDAYS 8|7c on ABC.