Snow had fallen unexpectedly, cancelling all flights out of Sea-Tac and leaving Callie stranded in Seattle. Arizona's invitation to crash on her sofa had been an innocent one. She figured they would put Sofia to bed, make pleasant conversation, and end the evening early.

They didn't intend for it to happen.

One bottle of wine turned into two, then three. It was Callie's fault, Arizona reasoned the next morning. She wanted to know about Owen and Amelia, and Meredith and Riggs.

"He'll never love anyone the way he loved Cristina," Callie lamented.

"Derek will always be the one."

Maybe it was the wine. Maybe it was the fact that every relationship she'd had in the last two years had never come close to the way she had felt when she was with Callie.

"Just like us."

It was barely a whisper, but the moment the words were out of her mouth she could feel Callie's piercing gaze on her, and she blushed.

"I mean…"

"I know what you mean."

It was a matter of seconds before their lips met in a desperate kiss. Hands grasped, bodies moulded together; every sensation feeling familiar and new at the same time.

They didn't intend for it to happen, but they should have seen it coming.