When there is a heart beating in your chest, there is jealousy for sure. And when you start to pretend you are not jealous, the heart would change, would forget. It would pump hate and disguise to your brain. All in blood, red warm raging blood in your veins. So you would change and forget, too.
And that is always been the way the most loving hearts gave place to something beating frighteningly. Aye, emblem of hate! Aye, a piece of stone!