The high of my forced merriment has worn off, and surprisingly, even you claim that I am at peace.

This couplet speaks to a profound sadness. The speaker reveals that their earlier 'joy' or 'playfulness' wasn't truly felt, but rather a 'forced' or 'compelled' state, like an intoxication that eventually wears off. Now, stripped of this facade, they confront the raw truth of their feelings. The irony is deeply poignant: even while experiencing this inner turmoil and disillusionment, others, perhaps unknowingly, tell them they are 'at peace.' It highlights the lonely burden of carrying hidden pain, where external perceptions fail to grasp the depth of one's true emotional state. It's a poignant reflection on unseen struggles and misunderstood suffering.