Learning the Heart

An android tries to understand love and grief.

Excerpt:
“Can’t an android have a friend?”
“I am not sure—“ Here my voice seemed to malfunction, wobbling and broken-sounding. “I am made to be self-sufficient. What would be the purpose of friendship, for a machine?”
“You’re not a machine, Sherlock,” John Watson said. “Machines can’t be happy or sad. And there are many purposes for a friend.”