Nausha Ameen's "rose thorns" is a tiny poem about a feeling that hurts in a very physical way. The speaker says it feels as though the thorns of roses are moving through their veins, and that the pain returns with every breath.
Roses usually stand for love, beauty and tenderness, but here only the sharp part is left. That contrast is the heart of the poem. Something that was probably lovely, perhaps a relationship or a memory, now cuts from the inside. The poem doesn't say what caused the hurt, so readers can fill that in themselves. Heartbreak and grief both fit, though the text never confirms either.
Breathing is automatic and impossible to avoid, so the pain can't be escaped. The short, broken lines and the opening "And now" make the voice sound quiet and tired, as if the speaker has just realised how deep the pain goes. The mood is raw, hushed and aching.