Human fulfillment is the direct pursuit of your own happiness. When are you free from once made commitments? Claims that others make on you?
Not to live your life as a rewarding enterprise is dehumanizing. It's positively cruel and self centered to interfere with the process of one's personal identity. The promise of faithfulness to another is really surrendering your own individuality and personal identity. Live and let live.
Freedom only let's the one's you love fly!