Every couple needs to argue now and then. Just to prove that the relationship is strong enough to survive. Long-term relationships, the ones that matter, are all about weathering the peaks and the valleys.

This quote means that arguing can actually be a good thing for a couple. To fully love each other and build a strong relationship, a couple needs to overcome challenges together. Arguing can be one of these challenges. If a couple can work together to resolve a disagreement, it proves that the relationship is strong enough to last. Therefore, arguments are a necessary part of a long-term relationship.