All these myths have some form of love, whether unrequited, holy, self-sustaining, or ruinous.  

Diana, goddess of the hunt, turned Actaeon into a stag who was then chased and killed by his own hounds; he had gazed on her bathing.

Baucis and Philemon, an old couple, provided food and shelter to two wandering peasants, the gods Zeus and Hermes in disguise.  The town had shunned the two, and Zeus urged the old couple to safety while he destroyed the town.  Their home then became a temple.

Parthenope, a siren whose name means maiden-voice, drowned herself when she failed to lure Odysseus; her body washed up on the shore of what became Naples.

The well-known myth of Helen, whether seduced or abducted by Paris, launched the Trojan War and as Marlowe famously wrote, “Was this the face that launch'd a thousand ships, / And burnt the ******* towers of Ilium.”