Played on broken heartstrings

It was a love torn apart by bullets and fear, and it left Phil Coulson stranded in a world where nothing was as it seemed. He was drawn to the sweet sound of the cello, falling for the beautiful girl whose fingers played on broken heartstrings, until he realised that he had sunken too deep. He couldn't drag her into his mess of a life, so he had to let the girl go.

"Do you miss her? Dinners at the Richmond? Do you miss hearing her play? You didn't even have a chance to say goodbye."

Phil Coulson knew that if he stayed to say goodbye, he would never be able to leave.