The speaker looks back on a love, or at least an intense longing, and decides it was a one-time thing. Their mind, they say, will never linger and ache for anyone the way it did for this person. It could sound like a complaint, or a vow of emptiness, but the last line turns it around: "and i think that is beautiful."
That small shift is what makes the poem. The speaker isn't mourning that the feeling is gone. They seem to accept it, even treasure it, as something rare that happened once. The word "linger" stands out because it suggests a mind that stays and hovers, unable to move on, and the poem treats that kind of lingering as something precious rather than painful.
The mood is quiet and reflective, with a little sadness but mostly calm gratitude. The short lines and lowercase style make it feel like a private thought said softly. The dash at the end leaves the thought open, as if the feeling hasn't quite finished.