"I did promise Qui-Gon. I'm not going to insult you by pretending that wasn't part of it. But we talked. On Naboo." He straightened up and stretched his already protesting back. "Qui-Gon and I." He glanced away, looking profoundly uncomfortable. "Anakin, he only told me he thought I was ready for the trials when he announced his intention to take you on as his new Padawan. My initial objections had nothing to do with you; I thought I was being thrown over."
And he'd never admitted that to anyone. He hadn't even expressed it explicitly to Qui-Gon.