Horcrux

"Love..." He spat the word, as if it speaking it caused him physical pain. "Love is fleeting, temporary. A mere firing of synapses and hormones that may feel powerful in the beginning, but always, inevitably fades. Weak. What we share is eternal. We are soul mates, Harry Potter, in every sense of the word. And you belong to me." HP/LV/GW triangle. More LV/HP. Things...get dark.