Can there be conflicts even in the most sincere and mutual relations?

I am sure that everyone has misunderstandings and this can not be avoided even if there is a strong love between people. But I would like to note that conflicts are harder to resolve in relationships where there is no sincerity and people do not appreciate each other.

If there are sincere feelings and affection, then any difficulties will seem easy, but for this you need a person who is ready for a serious relationship and mutual feelings.

If you haven't found such a person yet, why haven't we met you yet? We need to fix this.