When a relationship is built on complementary traits, it can actually help you learn and grow, not only as a couple but individually as well. There may be things in yourself that you never realized you were capable of or there may be things that you never knew could be changed.
When opposites begin to butt heads at every turn, this is a sure sign that attraction has faded. No longer do you find those opposing ways to be appealing, now they are nothing more than disturbances.
Temporary vs. Long-Term Attraction
The importance of whether or not opposites attract only matters if you are looking for a long-term relationship. When you are initially dating someone, it is a temporary attraction that yes, while it can turn permanent, doesn't usually matter how alike or unalike you are.{relatedarticles}
In fact, you may be trying to figure that all out. What traits in yourself would you like to find in someone else? What are those things that you don't like about yourself that you would never want to deal with in another person?
This is a learning process that you may have to go through before you realize what you really want in a relationship. Although it might not matter in the beinning, it becomes much more important when you start thinking about a future together. Temporary attraction only goes so far when it comes to certain aspects of a relationship.