Related Clues:

• Sacred promise
• 'I do,' for one
• Asseverate
• 31 Across, for one
• It may be broken
• Settle on
• Agree to unite
• Take sides
• Take a pledge
• Declaration sometimes made with crossed fingers behind the back
• Part of a wedding ceremony
• Order from the menu, e.g.
• Don't sit on the fence
• Solemn oath
• One taken in marriage