Lyric discussion by Weepingboobies 

Jonny in the song is probably the lead singer Jonny pierce. I think this song is about how he's in a relationship with a girl not because he's in love with her but because he's trying to hide his sexuality and wants to leave her. In real life the lead singer is gay and this is a common method of hiding one's sexuality. However the issue is that the girl doesn't want the Jonny to leave so she says "don't be a jerk Jonny"and gets more and more desperate until Jonny says "believe in something you're full of horseshit" as a way of trying to get her to move on. Jonny starts to become bitter and dislike her because his attempts to leave her fail. Thus the line "you used to be so pretty but now you're just tragic". When someone uses the method of being in a heterosexual relationship to hide their sexuality they usually choose a person they admire. This explains why he compliments her several times despite also insulting her. Overall this song is just a situation so many closeted people get themselves into.

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