Lyric discussion by Coredump 

Cover art for The Deep End lyrics by Scary Kids Scaring Kids

Dude fucked up the relationship, girl lets him know that its over (goes straight for the deep end) and her comfort is to leave him. But "she can't hold her own" she's not happy on her own.

Then she can't find anyone else, she's only got misery's company, and therefore she keeps misery company, aka hangs out with misery. Misery is her lonely self btw.

So she's all broke up and alone. Dude spends his nights dreaming of her. Pretty awesome song.