How does a boon become a curse for Tithonus in the poem, Tithonus? Answer in 100 - 150 words…

In Alfred, Lord Tennyson’s dramatic monologue Tithonus, the titular speaker is granted the boon of immortality by his divine lover, Eos (Aurora), the goddess of the dawn. However, because he forgot to ask for eternal youth alongside eternal life, this divine gift turns into a horrific, unending curse. While the immortal gods remain forever radiant and beautiful, Tithonus is subjected to the relentless decay of mortal aging. He becomes a withered, decrepit shadow, wasting away in endless physical ruin, wrinkles, and feebleness beside an ever-youthful goddess. He is denied the natural peace of the grave granted to ordinary mortals, envying the 'kindly race of men' who are permitted to die. Imprisoned in perpetual decrepitude and eternal suffering, Tithonus realizes that exceeding natural mortal limits brings unbearable agony, and he desperately pleads with Eos to take back her gift and let him return to the earth.