The servant robot had been making a lot of mistakes lately.
A diagnostic showed that the robot loves his mistress.
So, she had him reprogrammed with memories of falling in love with her.
And then everything going terribly wrong, and how they agreed never to try again.
Oh, and that he’d agreed to stay on as servant, more devoted than ever because of the love they’d have and could never have again.
He still did all the chores, all of the drudgework.
Better than ever.
But sometimes, she’d hear him whisper “I miss you.”
So, she disabled his speech processor.