Happiness

"Mom, are you happy?" asked 4-year-old Rohan, perched precariously on a chair at the dining table, eating his favorite mac-and-cheese, his eyes huge and round.
The boy's been asking a lot of questions lately.
"Yes, baby, I am," I reply. "Are you happy?"
"Yes," he said.
"Do you know why you are happy?" I probed.
"Because Mommy is here," he said, smiling.
I don't have a heart anymore. It's lying squished, a pile of goo at my son's feet.