When Light is asleep, all the walls come down. He talks and cries and is allowed to feel the grief and guilt over the lives he's ruined.

More than once, Misa has heard him mutter 'L' in between sobs.

She does not feel jealous; he talks to her too.

He mutters apologies that he doesn't know she can hear, and every time she hears them, she whispers words of comfort in his ear.

One time after this- only once- she hears him say three little words: words that he never means when he's awake.

'I love you.'

And she cries.