Spelled to aid in loyalty, fidelity, faithfulness, devotion and honouring a sacred bond. 
Sanctifies the covenant of a relationship or commitment. Assists in creating remembrance and thoughts of your other and honouring the connection by being faithful and loyal. Increases the devotion to that which you have bound yourself to. Inspires passionate and enduring love. 
How to use:
Anoint the heart space with intention or affirmations to inspire devotion for your other.
Use in spell work for devotion to anything you wish (educational, career, relationship, etc.)
For marriage: 
Add to floor washes and door washes.
Anoint the threshold of your door after cleansing your home spiritually from back to front, disposing of all dust and mop water outside the door. Say prayers/affirmations over the threshold when anointing to sanctify the covenant of your marriage. 
Dress white, pink or red candles and burn in your home. Say prayers of devotion over the candle.