Many a times, it so happens in life that nobody is wrong. Nobody's intention is wrong for anybody. Yet everybody is unhappy. The entire environment gets filled with frustration and negativity. It's ok until this point. Yet as things continue, to see each other happy, one of them becomes bad in the eyes of the other and even starts doing bad things, just to see the other person happy.
Perhaps seeing these sad conditions of a human being's life Shakespeare has said,
"Time itself is corrupt." He adds that there is no such thing as a hero or villain, as most of the time a hero is not a hero, but a villain. Sometimes, the villain himself turns out to be a hero, which means sometimes in just one character, we find both the hero and the villain. It is just not possible to imagine a hero and a villain as a separate entity, because time itself is corrupt.