Everything in "once" hangs on one small word. Read one way, it means a single time: the speaker confessed their feelings only once. Read another way, it suggests "formerly," a story already half in the past. The poem opens on that word, alone on its line, like a breath taken before saying something risky.
The confession that follows brings no relief. It feels like trespassing: "it felt so wrong, / loving someone who has been someone's." The possessive "someone's" makes a person sound like property, and the speaker seems to be handling something borrowed. The earlier partner is never named, so judging by the text, this "someone" stays a shadow, felt more than seen. The vocabulary also slides. "I like him" becomes "loving" one line later, then "i like him too much." "Like" is the safer word, the one a nervous person reaches for, and "too much" shows it is carrying more than it can hold.
The apology is almost painfully thorough: "i apologized to him, / i said i'm sorry." The speaker says the same thing twice, as people do when they are upset and want to be sure they were understood. Then comes "my heart hurts," with no metaphor and no decoration. Plainness is the poem's main method. It has no rhyme and no regular meter, and the lines are cut short at commas, so it reads in small breaths. Even the "i" stays lowercase, which gives the whole piece the sound of something whispered, or written in a private notebook.
The poem's one concrete image arrives in a question addressed to the reader: "have you ever felt someone was that important to you, / that you woke up at night, / to pray for him." There is no question mark, so it reads less like a real question than a plea to be recognised. The line break after "night" leaves a gap between waking and praying, like a pause in the dark. A prayer needs no audience, so it is an act of love that the loved person never has to know about. The speaker calls it "the most beautiful thing i have ever done, / to someone i love." The small oddness of "to" rather than "for" could make the prayer feel like something that lands on him, gently.
Then the poem turns. "But it can be more beautiful, / if he ever done that too, / for me." The grammar is rough ("if he ever done"), and that roughness is part of the charm. It sounds like someone thinking aloud, not polishing a line. "For me" sits alone on its line, as small as the hope it carries.
What follows is the most carefully placed word in the poem: "or," a whole line on its own, a hinge on which the mood swings. The speaker lets the sentence fall: "maybe he had done that, / but for the girl he loves." The tenses matter here. "Had done" belongs to the past, while "loves" is firmly present. The act the speaker longs for is imagined as already happening, only aimed elsewhere. The little word "for" now does the poem's arithmetic of who receives love: pray *for him*, *for me*, *for the girl he loves*. She is also the only person described with a definite article. The speaker is "i," the earlier partner is "someone," and she is simply "the girl." The poem never says whether she is the "someone" of the opening, but the echo invites the thought.
The poem matters because of what it refuses to do. It does not turn heartbreak into anger or accusation. The speaker apologises for having feelings, treats prayer as the highest gift they can give, and then calmly imagines that gift going to someone else. There is no consoling final line, and the poem stops where the hurt is. That restraint makes it ring true. Many readers will recognise the feeling of loving without being answered, and of still wishing the other person well.