Last: [s12e23] At

Reaches his breaking point with Jo, choosing to walk away rather than stay in limbo.

Give you a breakdown of the to see how these cliffhangers resolve. [S12E23] At Last

: Owen decides to sell his house, signaling he is ready for a fresh start. After some soul-searching and a conversation with Amelia about what they both want, Owen proposes. Amelia says yes, and the two decide to get married almost immediately. Reaches his breaking point with Jo, choosing to

The episode centers on several couples reaching critical turning points. After a season of "will they/won't they" and professional tension, Meredith finally gives in to her attraction to Nathan Riggs. Meanwhile, Owen and Amelia take a massive leap in their relationship, while Jo and Alex hit a definitive wall regarding their future. After some soul-searching and a conversation with Amelia

Officially begins her first post-Derek "tryst" with Nathan Riggs.

: Meredith decides to sell the house Derek built (the "Dream House") to Callie and Penny, as she feels she is finally ready to move on from that chapter of her life. Major Character Developments Development Meredith Grey

Explain the and why his arrival was so controversial.