The speaker can't accept that someone loves them, and the poem is an attempt to work out why. Early on, they look for reasons outside themselves: the other person's eyes, their embrace, even their heartbeat don't convince them. Then the blame shifts inward. Fear, a traumatic past and an anxious future all seem to stand between the speaker and the love being offered.
The turning point comes in the third stanza, where the speaker admits the real root: they don't love themselves. They call this a "hipocresy" and a "dangerous compass," as if their self-doubt keeps pointing them the wrong way. The ending asks a painful question: if the speaker can't give themselves love, why would anyone else settle for them? The "toxins" and "tragic Song" suggest they see their own inner voice as poisonous.
The mood is sad, anxious and quietly self-punishing. The repeated opening line sounds like a stubborn refrain, showing how hard it is to shake the belief.