The intro, bridge, and closing of this song are all absolutely succinct. Apart from these, the only other sections of the song are two verses and three choruses. Still, the song manages to last for three minutes. It does so because of the lengths of both the verse and the chorus, each of which have three parts.
In the verse, you have a two-line exposition, a two-line dramatic moment, and then what might be called a rising action, the final two lines that lead into the chorus.
The first part of the chorus, then, is the climax, with the second and third parts something akin to the falling action and the denouement.