In the beloved's chamber, all my shame vanished. I became like your empty flask, which you chose not to fill.

This couplet speaks of a lover's deep shyness in the presence of their beloved. The speaker describes how they were so overcome with modesty that their very essence, symbolized as an empty flask, withered away. They lament that while they were so close to their beloved in the chamber, the beloved did nothing to fill or nourish this 'empty flask.' It's a poignant expression of unrequited love or emotional neglect, where the speaker's own inhibitions combined with the beloved's inaction led to a feeling of profound emptiness and sorrow.