"You Still Believe in Me" contains the first expression of introspective themes that pervade the rest of the album. The lyric discusses a narrator who, while acknowledging their irresponsible behavior and unfaithfulness, is impressed by the unwavering loyalty of their lover. In Wilson's words, the song was about a man who feels free to express his love for people from the perspective of a girl. Like "Wouldn't It Be Nice", there are tempo changes throughout the song. Wilson and Asher created the song's ethereal intro by plucking a piano's strings with a bobby pin. The ending features the sounds of a bicycle bell and horn, a remnant of the song's original childhood theme.