Heart Of Stone

The speaker describes himself as emotionally cold and proud of being difficult to hurt. He has made many women cry, yet one girl seems different: he tries to affect her, but she does not respond as he expects. His confidence turns into insistence, and by the end he tells her to leave rather than admit that she might matter to him.

“Heart of stone” is a metaphor for a person who seems unable to feel love or sadness. The repeated claim that the girl will never “break” it suggests that he sees emotional vulnerability as a defeat. “Knock her off her feet” is an idiom meaning to impress or strongly attract someone, though here it also sounds like he wants to unsettle her.

The lyrics can be heard as a boast about emotional toughness, but the repetition may also reveal insecurity: he keeps declaring that she cannot affect him, which could mean he is trying to convince himself. Still, the song does not clearly say that he secretly loves her. His coldness may be real, exaggerated, or a defensive pose; the listener is left to decide.