Here, a speaker realizes they have fallen for someone, and the surprise is the whole point. The title, "Didn't Expect A Thing," sets that up: nothing about this feeling was planned. Each stanza starts with a small moment, such as a look or two dreams overlapping, and then turns to a question. "Was I accidentally falling for you?" and "Was it a coincidence?" show a speaker still trying to work out what happened, even while admitting the answer: "Little did I know that I was."
The feeling builds across the three stanzas. The first is about attraction, the second about finding common ground ("We were very similar"), and the last about need. By the end, the speaker says they "never thought I would need you so much" and that this person's time has changed all of theirs. The language is simple and direct, which makes it sound honest rather than polished. The mood is soft, wondering, and a little vulnerable, like someone looking back and realizing when everything shifted.