There's a monster under my bed And I feed it even though I want it dead Never thought it would get so strong Notorious but never seen Not flesh or bones but it's Burning underneath my skin I don't know where it goes But I know it comes from The promises I never kept and the words I never Said that's... Heartache I'm talking about heartache This pain will suck you dry You sit at home and all you do is wonder why Until the grief becomes a drug You grab the bottle then something stronger You're not the first that can't take it any longer That beast will never get enough Of the memories I can't erase and the kiss I'll Never taste that's Heartache I'm talking about heartache This vicious cycle never ends Although it kills me I would do it again Love is a monster Promises that have never been kept All the words that have never been said oh oh That beast won't stop to grow It lives on all the kisses I will never taste All the memories I just can't erase oh oh So I guess we all know I'm talking about Heartache I'm talking about Heartache Yeah, I'm talking about heartache Heartache Heartache