Two young men, a mechanic, Dave, and a medical student, Phil, collaborate on modifying a household robot, originally meant only to cook and clean. They are more successful than they intended; despite the robot's household programming, it develops emotions. The robot, named "Helen O'Loy" (a play on Helen of Troy and "alloy"), falls in love with Dave. Dave initially avoids her and rejects her advances, but after some time he marries her and they live together on his farm. Originally published in 1938 in "Astounding Science Fiction."