The poem reads like a memory of a failed or fading relationship, told by someone still stuck in it. The epigraph sets the scene: the speaker sitting on a windowsill, smoking in a lover's bedroom, "not knowing anything." That innocence is the key, because everything after it feels like knowledge arriving too late.
The "little deaths" suggest intimacy, but the words around them are bleak: hollowed-out heads, rapid, shallow breath. Closeness here feels empty, even panicked. The cigarette sparks flare in the dark and drift away unnoticed, which seems to mirror the relationship itself, brief and bright, then gone without anyone caring. The final lines turn hard. Promises fade, a day becomes just another day, and it leaves "one more entry wound" in the speaker's brain. The mood is numb, tired, and quietly hurt, as if the memory keeps replaying and keeps cutting.