Possible Clues:

• A French boyfriend is inconstant
• Not even the occasional girlfriend?
• Rocky, one from France stayed round
• Precarious, insecure
• No firm could make tunes by day like this
• Nancy's a boyfriend that's far from reliable
• Sad tune, awfully variable, not like rock
• Note Tuesday's arrangement is not fixed
• Liable to shake
• Insecure shifting dunes at end of bay