Roman.
Technically, it is impossible for a Vampire's heart to stop, since our heartbeat follows nothing else but the dull rhythm of death.
There exists a beat, however. A lull, a dull throb, a rhythmic pattern. But it can not stop. Unless an immortal is destroyed for good, and their heart is turned into stone with the infusion of the curse embedded in the blade of Herisea.
But my heart stopped that night, as impossible as that should have been.
Upon her entrance, the world lost focus and balance and everything else relating to the laws of physics and gravity.
She was the core of the earth, the gravitational center of the universe. Master of existence and everything else of which creation revolved around.
All heads turned to watch the arrival of her majesty, cruel monarch that trampled ever so violently upon my rebellious heart.
Jade.