The queen of the gods absolutely despises Heracles, because he is yet another reminder of her husband Zeus' cheating, philandering ways. Though she gave most of Zeus' illegitimate kids a hard time, she seems to have a special kind of hatred for Heracles. Maybe it is because he ends up being the shining star of all of Zeus' illegitimate children. Maybe she's jealous of all of the attention he gets? Perhaps Hera is just a very lonely goddess who loves her husband very, very much.
In this story, surprisingly, Hera and Heracles make amends. When he becomes a god, she agrees to let him marry her daughter, Hebe.
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