The Book of Love
"The Book of Love" is a song by the American indie pop group, The Magnetic Fields. The version of the song that appears in the Season Nineteen episode, "Tweek x Craig", is performed by Peter Gabriel.
Background
This song plays as everyone starts believing that Tweek and Craig are in a relationship, while the two lie in their beds confused about the situation. A majority of this song to a slideshow, featuring Yaoi art of them.
Lyrics
The entire song is not heard in the episode, and the lyrics below is only the excerpt heard in the show.
The Book of Love is long and boring,
No one can lift the damn thing.
It's full of charts and facts and figures,
And instructions for dancing.
But I-I-I-I-I-I
I love it when you read to me
And you-u-u-u-u-u-u
You can read me anything.
The Book of Love has music in it.
In fact, that's where music comes from.
Some of it's just transcendental.
Some of it's just really dumb.
But I-I-I-I-I-I
I love it when you sing to me
And you-u-u-u-u-u-u
You can sing me anything.