So you say you needed space So hard to breathe I will never be enough, be over me You know you always fake it well Who am I to speak Every time you wanna sleep with me Is right about the time you're leaving me Leave me be When my heart starts playing dumb And when you've cracked me like a drum So the beat goes on and on, on and on How do I know, how do I know, how do I know When it's time to beg my heart to please oh please let go How do I know, how do I know, how do I know When it's time to say goodbye, forget about hello Have we been living on a lie Who should I believe Is it the side of you that freaks out losing me Could you make up your fickle mind You live to frustrate me Cause every time you take a piece of me I'm caring less about the mess we used to be When the pain starts going numb And when the yells turn into hums So the spark has come and gone baby gone, baby gone When my heart starts playing dumb And when you've cracked me like a drum The beat goes on and on, on and on, on and on... How do I know, how do I know, how do I know When it's time to beg my heart to please oh please let go How do I know, how do I know, how do I know When it's time to say goodbye, forget about hello Nothing's gonna last forever Nothing's gonna last forever For you I don't survive For you I don't survive Nothing's gonna last forever How do I know, how do I know, how do I know When it's time to beg my heart to please oh please let go How do I know, how do I know, how do I know When it's time to say goodbye, forget about hello