Brittany Allen's poem is a long list of wishes, and almost every one begins with "I want to see." The speaker isn't asking for grand gestures. They want to watch a loved one's face in moonlight, at sunset, in the morning, in rain and in snow. The wishes get more personal as the poem goes on: the look of someone lighting up about something they love, the expression of deep concentration, even the way they look at the speaker when the speaker turns away.
The feeling here is tender and hungry at once. The speaker wants the happy moments and the sad ones, "the simplicity" of raw emotion and its "bitter complexities." In the last lines the focus shifts from the face to the whole person, including who they hope to become. The repeated phrasing gives the poem a soft, pleading rhythm, and the mood is intimate, sincere, and quietly devoted, like someone saying they want to know another person all the way through.