"Severus told me that you'd been irritable because Voldemort had led you through those dreams to the Department of Mysteries."
"Snape never properly taught me Legilimency. He made me even more irritable, and left my mind more open to Voldemort."
"It's Professor Snape, Harry. I trust him. He wouldn't do that."
"But he refused to teach me Legilimency properly!"
"Darren approved of it. He thought you were about to take your exams and didn't want you to be so exhausted.
Haven't you noticed that every time Legilimency was mentioned, he seemed a little guilty?"
Harry recalled that whenever Legilimency had come up before, Darren had always quickly changed the subject.
He had thought Darren did not know Legilimency either. He had never expected Darren to be worried about him overworking himself.
"Weren't you the one who told me to learn Legilimency? How could Darren tell me to stop, and I'd just stop?"
"So this was Darren's third mistake. He should not have privately told you to stop. Though I don't think Severus could have continued teaching you after you saw his memories.
But he should have insisted that Severus continue teaching you. If he had insisted, I think Severus..."
"I don't need you criticizing him in front of me!"
Harry glared viciously at the old man before him. What right did he have to pin every mistake on Darren?
If Snape had not treated him that way, why would Darren, worried about him, have stopped the Legilimency lessons?
"Yes, Harry. All of this was because of me. I should have told all of you everything long ago.
When you were just born, I was the one who left you at your aunt's doorstep.
Many people advised me to send you to be adopted by a wizarding family, but I refused.