It was sick, he knew that.
But he couldn't help it, he loved seeing Leah cry.
It made her human, real.
It showed, that after everything, she still felt.
It showed that she still cared about something.
It showed that she hoped.
He never wanted to be responsible for making her cry,
But Jacob couldn't help the fact that he appreciated Leah's tears over him.
Because he knew that she felt, for him.
And that she cared, for him.
And that even though she had suffered in the past from love,
Leah still hoped for something better, that she still hoped for Jacob.