I have not broken your heart—you have broken it; and in breaking it, you have broken mine.
Hurt and anger move together here. The sentence flips subject and object to show how blame loops back. Juxtaposition—your heart, my heart—captures the tangle of love and reproach. The tone is sharp, but you can hear the wound speaking. This is the kind of line that comes when pride and pain fight for the same mouth. It rings true to anyone who has blamed and bled at the same time.