There is no transaction in the mind, nor any desire in the heart, but there is no trust in this logic of love either.

This couplet speaks of profound emotional exhaustion. The speaker claims to have nothing to gain or lose—no transaction in the mind, no burning desire in the heart. Yet, the true depth of despair is revealed in the second line. It's not the lack of love, but the utter loss of *faith* in the very logic or concept of love itself. It's the realization that love, as a concept, has become unreliable.