It was always you (слэш)

And so it began again. The same relentless dance we had been locked in since the moment we met—a vicious, unspoken war, raw and unforgiving. And I welcomed it.
Because it made me feel alive.
This thing with Potter—this constant battle, the push and pull of fury and instinct—it was the only thing that cut through the misery, the despair that had consumed me since the monster I once worshiped took my home, crushed everything I had held dear, and left me with nothing.
At least one thing we have in common, I thought bitterly as I ducked, barely avoiding the spell he sent my way.
*
Or, Draco and Harry through the years, going from fierce enemies to besotted lovers, since we all know that the epilogue was a Freudian nightmare...