God demonstrates His own love toward us, in that while we were yet sinners, Christ died for us. —Romans 5:8
During the marriage ceremony, the vows promised to one another speak of unconditional love. Will you love through better or worse, through sickness and health, in joy and sorrow, for richer or poorer? Those who have been married any length of time understand that these challenges do come up and unconditional love is not ran by our emotions or feelings. In times of 'worse' we may not feel very loving! Unconditional love is oftentimes reflecting on those vows taken at the beginning of marriage and reinstating them with purpose to love each other...no matter what.
The Love Dare:
Do something out of the ordinary today for your spouse—something that proves (to you and to them) that your love is based on your choice and nothing else. Wash her car. Clean the kitchen. Buy his favorite dessert. Fold the laundry. Demonstrate love to them for the sheer joy of being their partner in marriage.