Should things really be left unsaid sometimes?

People are different from each other, they think differently. We don't know what's going on in their heads. They don't know what we are thinking. So when two completely opposite people, who are so close to each other, have differences... should they confront each other? Should they just fight and say everything they have on their minds? Start with a clean slate?

But they both know what's going on. They aren't blind. They are at a situation where, if they say it out loud, other people are affected, relations are broken. So they continue the way it is going. They keep it inside. Because they think it's for the best. To keep somethings left unsaid...