The poem opens with a sentence that has lost its subject: "Was blissfully lost in her hazel eyes." The missing "I" suggests a speaker so absorbed in looking that he has briefly stopped existing as a self. It also sets up the poem's real subject, which is watching. For sixteen lines the speaker never speaks to the woman, touches her, or is noticed by her. He only observes, and his hurt comes from how closely he sees.
The details of that seeing are tender and specific. Black hair falls "softly on her shoulders," and her hand traces "invisible patterns" on the hem of a wine-coloured dress. Only someone who knows her well would notice such a small, unconscious gesture, and perhaps read it as nervousness. Her eyes "would always crinkle as she smiled." The conditional "would always" belongs to memory, and it collides with the next line's "Now stood there." That one word draws a line between the woman he remembers and the one in front of him.
The imagery is built around intoxication. The dress is "wine," she looks "intoxicating," and the scarlet pimpernel in her hair adds a spot of red to the picture. The word "intoxicating" returns in the second stanza, where she becomes "that intoxicating girl," as though the speaker cannot find another word for her, or cannot stop being under her influence. The poem never says why the pimpernel is "forbidden," as the title claims. Judging by the text, the forbidden thing may be the speaker's own desire, or the flower may simply stand for a woman who now belongs to someone else. That "Her other hand interlocked with his" ends the first stanza so bluntly suggests the second reading.
The form is free verse with no rhyme scheme, and the line lengths wander the way a thought does. The long, flowing lines of the first stanza mimic a lingering gaze, and then the question "Didn't my heart just skip a beat?" breaks the narration. It is a small confession in the middle of a description. The second stanza turns on a triple repetition: "She, who simply resided as old pictures and sad memories / She, who had moved on too easily / She, who no longer needed me." This is the poem's emotional centre. The pattern builds like an accusation, but the content shifts from what she is to what she has stopped doing. The last line, "no longer needed me," shows that the speaker's grief is less about losing her than about losing his place in her life.
The poem also quietly undermines its speaker. He says she "moved on too easily," but he cannot know how easy it was. He admits he "had stood staring at her yet again," which suggests this is a habit he cannot break. Her hand fidgeting on the hem could even hint that she is less at ease than he assumes. The word "resided" is worth noticing too. She lives in his memories like a tenant, and then he flees "that claustrophobic room." His own mind and the crowded room seem to close in together.
The dress is the poem's sharpest detail. She wears her "favourite dress that I had once gifted her," so the evidence of their past is literally on her body, now beside another man. Whether she remembers is left unanswered, and the speaker clearly cannot tell.
The final couplet is the most interesting. "Whom I knew can never be his / But who was never meant to be mine." The tenses wobble, with "can never be" in the present and "was never meant" in the past. The speaker seems to be comforting himself, insisting that the new partner will never truly have her, then conceding that he never did either. Neither line is quite convincing. It reads like a man talking himself into peace and not reaching it, which makes it more honest than a tidy resolution would have been.
The poem's significance is modest but real. It does not offer a new idea about heartbreak. What it does well is capture the awkward, private experience of seeing a former love in company, where noticing everything and being able to do nothing leaves a person both jealous and ashamed of being jealous. It earns its feeling through small observations: a hand on a hem, a crinkle by the eyes, a dress that used to be a gift.