Miscommunications are bound to happen. And, both of you are unique individuals with your own unique way of seeing the world. You will have differences in ideas of how to deal in certain situations. That means there will be conflicts.
Happy couples are OK with conflicts. They feel safe to share their perspectives. They discuss the issues without fighting; they don’t explode or try to exert power of the other. They also feel secure enough to take on the other’s perspective sometimes. (Actually, a lack of conflicts may mean that there is a lack of truthfulness and emotional safety. Trust is eroded and resentment builds. The relationship feels strained and unstable.)