Commit to Growth.
A radical kind of commitment is the mutual commitment to growth in the relationship. It is not just a commitment to stay married, not even a commitment to always love each other. It is a commitment to an attitude, a determination to see everything that happens as an opportunity to grow closer and stronger as a couple.
Even arguments can be regarded in this light, since learning about the feelings behind strongly help opinions moves us closer to new understanding of each other. When we are mutually committed to growth, both for ourselves and for the partner, the relationship , the us, also benefits.