He loved her very much. Enough that he was willing to do anything in order to bring her back. To do that, he needed two particular Miraculous-- Adrien's and mine. You were all innocent people he was willing to let die in order to obtain those two items. Seems a little over the top, doesn't it? But that's how he's always done things. He finds people he can use and tries to use them against us.

[Marinette looked more and more pained the longer she goes on until finally...]

Gabriel Agreste... He's a man I greatly admired, you know. As a designer. At least I did before I realized what he really was. But that just goes to show... talent doesn't make you great.