Answer:
Orpheus looked behind because he was overcome by love and excitement.
Step-by-step explanation:
After Eurydice past away(bitten by a viper), Orpheus traveled to the underworld to reclaim his lover's soul from Hades. He was allowed to bring her back to the land of the living, on one condition-he didn't look behind to see if his wife was following him. Just before they had left the cave, Orpheus could no longer endure the curiosity. He longingly glanced behind. At that moment Eurydice was summoned back to the underworld, leaving Orpheus dismal.
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