Scarlett Johansson is red-faced after discovering her schoolboy love is poised to release a song charting their relationship and her subsequent rise to fame.

BETTER LOVE, written by Steel Train frontman Jack Antonoff, accuses the actress of dumping him after rocketing to Hollywood's A-list.

The lyrics read: "Fame swept her off her feet/She sees nothing she did before/Hey Scarlett, you're not the same."