What will make the beauty of the poet's beloved eternal?

The beauty of the poet's beloved will be eternal through the power of their love and admiration for each other. The poet's words and expressions of love will immortalize the beauty of their beloved, capturing it in timeless verses and preserving it for future generations to appreciate. Additionally, the depth of their connection and the memories they create together will ensure that the beauty of their beloved lives on in their hearts and minds forever. Ultimately, it is the enduring love and devotion between the poet and their beloved that will make their beauty eternal.