Possible Clues:

• It costs a lot to steer with Da
• The beloved one is most costly
• Start of a love letter
• Most expensive sort of address?
• Set askew after making one read, my love
• "Mommie ___"
• “Sweetheart”
• Group of narcs stop most expensive ...
• Love is almost dead — what's left?
• Potentially the cause of most damage inside a restaurant