You can pay off your taxes and mortgage, but you can never say, “I’m done loving you.” Love’s a debt we always owe. It’s the perfect fulfillment of the law which must be paid daily, without limit (Rom. 13:8-10). Every relationship in our lives—be it in our family, friendships, workplace, or the civil sphere—is built on this single debt. Why must we not commit adultery, murder, steal, bear false witness, or covet? Because our duties to others are summed up in this: “You shall love your neighbor as yourself” (Rom. 13:9). 

 https://churchandfamilylife.com/sermons/68ec9604d5e03e6e6150ae12