Hera, Queen of the Gods, patroness of married women, and wife to the prodigiously unfaithful Zeus, was a remarkably faithful wife in contrast to the infidelities of her husband. Over and over, Zeus would sneak around and cheat on her, and over and over, Hera would try and thwart his amorously clandestine plans. After reading several accounts of this relationship, you get the impression that the whole thing was a big game to these two.
Unfortunately, the mortal women that Zeus was so attracted to usually didn't find the game very much fun, especially once Hera found them out. For while Hera could be noble and generous, she was no one to mess with. Her temper was infamous. After all, this Greek Goddess saw to it that Troy was destroyed and that every last Trojan was wiped out of existence, simply because Paris thought Aphrodite was hotter than she.
Even Artemis, Queen of Animals, Mistress of Wild Beasts and of the whole of wild nature, is said to have appeared like a frightened pigeon when Hera, angry at her on account of Artemis' support of the Trojans, grabbed her by the wrists and boxed her with her own weapons, warning here that "if you match yourself with me you will regret it."