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In page Apollo:

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Admetus was the king of Pherae, who was known for his hospitality. When Apollo was exiled from Olympus for killing Python, he served as a herdsman under Admetus, who was then young and unmarried. Apollo is said to have shared a romantic relationship with Admetus during his stay.[1] After completing his years of servitude, Apollo went back to Olympus as a god.[citation needed]