The song "Him" by Harry Styles appears to be about a past relationship and the lingering feelings that come with it. It seems that the narrator is struggling to move on from their ex-lover, who is now with someone else. The opening lines allude to the idea of there always being two people in a relationship; one who stays and one who leaves.

The chorus, which is repeated throughout the song, expresses the narrator's frustration and sadness over his ex's new relationship. He doesn't want to hear about how happy she is with the new guy, especially not in the songs she continues to write, which may have been inspired by their past relationship. The narrator even reminds her that he was there when she wrote those lyrics, and it was him that she had on her mind.

In the second verse, the narrator references specific memories they shared together, such as the dress in "Wildest Dreams" and the lipstick stains on his sheets. He also highlights how the things she used to say to him - like complimenting his eyes - now bring him heartbreak.

The bridge seems to suggest that the narrator had fallen in love with this person from afar before they got together, and now that they are apart, he is struggling to let go. The outro ends on a bittersweet note, with the narrator still thinking about their past relationship and wondering if she thinks about him too. Overall, the song seems to be a raw and emotional exploration of the pain of unrequited love and the struggle to move on.