Eros (Cupid) - "desire" - is the mischievous prankster son of Venus who, at the same time, is responsible for keeping humanity thriving. He is, indeed, a troublemaker and a pest, isn't he, with his devilish little arrows and bow? As Kesler and I observed the other day, those little arrows can hit you at the oddest, most unsuspecting moments. Like at the supermarket.
You can refresh your memory of the folktale of Cupid and Psyche here.
This is Caravaggio's c. 1600 Eros Victorious: