Why? Because he doesn't actually want you to win this battle.
He is not cruel but in his mind it really boosts his ego to imagine that you will miss him forever and that you will never find any guy who matches him.
He still has this uncontrolled need to be number one in your mind.
When you tell him about these files, you reveal you battle plan and give him the keys to stay in your mind longer.
Remember that this is a battle of psychic energies between you and him.
Keep these secrets to yourself and don't reveal them to him ever or you'll lose your edge in this battle.
To your power!