I'm feelin sick inside 
 cause I can't believe it's happening 
 I thought that he'd be gone by now 
 We were on a break and you said you needed space to breathe 
 I didn't know your ex was in town 
    I finally figured it out   
 Chorus: 
 You're heartless 
 The devil in disguise 
 So heartless 
 You make me feel just like 
 I'm selfish, foolish, helpless, so alone 
 So heartless   
 When I asked you what happened 
 You sat there and lied to me 
 An swore you were just hangin out 
 So why'd you look so scared baby every time the phone would ring? 
 And how do you explain the stains I found?   
 I finally figured it out   
 Chorus #2: 
 You're heartless 
 The devil in disguise 
 So heartless 
 You make me feel just like 
 I'm selfish, foolish, helpless, so alone 
 You're heartless 
 There's nothing left inside but darkness 
 I finally realized 
 You're selfish, foolish, helpless, so damn cold 
 So so heartless 
 Yeah yeah yeah yeah   
 You're heartless 
 The devil in disguise 
 So heartless 
 You make me feel just like 
 I'm selfish, foolish, helpless, all alone   
 You're heartless 
 The devil in disguise 
 So heartless 
 You make me feel just like 
 I'm selfish, foolish, helpless, all alone 
 You're heartless 
 There's nothing left inside but darkness 
 I finally realized 
 You're selfish, foolish, helpless, so damn cold 
 So so heartless   
 Nah nah nah 
 Nah nah nah 
 Yeah yeah yay 
 Nah nah nah naah nah nah nah 
 So heartless 
 Nah nah nah 
 Nah nah nah 
 Yeah yeah yay 
 Nah nah nah naah nah nah nah 
 Heartless 
 Nah nah nah 
 Nah nah nah 
 Yeaaaaahhh 
 Nah nah nah naah nah nah nah 
 Nah nah nah 
 Nah nah nah 
 Nah nah nah naah nah nah nah 
 Heartless