Possible Clues:

• The blonde is not cheating
• My __, musical based on Shaw's Pygmalion
• Damsel, to a knight
• My! What a show for a blonde!
• My musical
• My blonde is musical
• Attractive damsel
• 'Faint heart ne'er won . . . . . . . .'
• ` `Faint heart ne'er won .... .... ' '
• My! What a blonde that was for show!