Related Clues:

• Checks off
• Tic-tac-toe side
• Past partners
• ''Hollywood Squares'' symbols
• Some past dates?
• One-time item
• Written kisses
• Custody sharers, maybe
• They used to be together
• They mark the spot
• Paper-ballot markings
• Kisses on paper
• Knot untiers
• They were once together
• Paper-ballot marks