L listened, respectfully, to Blythe before she seemed to decide on leaving. However... she was hesitating. Almost as if she had resolved to give him one final chance.
Did he love her enough to let that chance go? Of course he did.
"I'm frightened," he said quietly. "But... I can't tell you what is going to happen. I only know that you would do the exact same thing." L recalled the entire fiasco involving Blythe, Kain, Light, himself, and Mello, and what he had been asked to believe versus what had actually happened. Blythe was no stranger to keeping secrets for the safety of a loved one.
"I promise that, a few days from now, you will know everything."