Yes. (It's a simple answer with layer upon layers of reasoning that he, more or less, kept to himself over the years.) I trust you because of your admirable qualities, Severus. I left so many tasks to you because I knew you - above all others - would perform them the way they needed to be performed.

I regret not confessing how very proud you made me over the years. I regret not telling you how I valued you - not only as a confidante or spy - but as a friend.