Sonic screwdriver to the heart: Hello, Sweetie

River Song's cheeky greeting was usually just a bit forced, a desperate attempt at levity, but to it have it pushed back at her with infinite kindness and unbearable tenderness, makes it the most romantic goddamn moment of the entire series.

Without a single word, Peter Capaldi's face says it all as she tells the bad guys he never really loved her, and it cuts him to the core that she really believes it

But even the heart of a star can show his love for somebody, just by standing next to her, and the moment when she finally realises who this old man actually is, it's just a moment of utter joy.