I figured this out by ear, so there is probably some mistakes.
http://justkait.com/


         F# (244322@1)             C#Didn't (x43121@1)know what I was doing
             
           Eb (x43121@3)          B'Take (x2444x@1)it slow' didn't apply
               
          F# (244322@1)                 C#Knock (x43121@1)me out the moment I saw you

           Eb (x43121@3)               BThis (x2444x@1)is wrong but feels so right

             BWhen (x2444x@1)do I let it go?

                F#You (244322@1)gave me a heart shaped bruise

               C#Guess (x43121@1)I'm not over you

          EbBaby (x43121@3)it hurts so good
 
               BMore (x2444x@1)than it really should
            
               F#You (244322@1)gave me a heart shaped bruise

               C#Guess (x43121@1)I'm not over you

          EbBaby (x43121@3)it hurts so good
 
               BMore (x2444x@1)than it really should
          
         F# (244322@1)                 C#Didn't (x43121@1)think, it was already too late
     
           Eb (x43121@3)         BYou (x2444x@1)hit me on my blind side

         F#Hold (244322@1)on tight

         C#It's (x43121@1)a bumpy ride

            Eb (x43121@3)                    BShould've (x2444x@1)thought before I let it slide

        BBut (x2444x@1)do I let it go?


                F#You (244322@1)gave me a heart shaped bruise

               C#Guess (x43121@1)I'm not over you

          EbBaby (x43121@3)it hurts so good
 
               BMore (x2444x@1)than it really should
            
               F#You (244322@1)gave me a heart shaped bruise

               C#Guess (x43121@1)I'm not over you

          EbBaby (x43121@3)it hurts so good
 
               BMore (x2444x@1)than it really should

   C# (x43121@1)                          EbI (x43121@3)think that I'm in trouble, a piece without a puzzle 

   Ab (xx1114@1)                  F#I (244322@1)don't know who, could see what's true

C# (x43121@1)                     Eb (x43121@3)               BWhats (x2444x@1)the answer baby, maybe I'm just crazy over you


                F#You (244322@1)gave me a heart shaped bruise

               C#Guess (x43121@1)I'm not over you

          EbBaby (x43121@3)it hurts so good
 
               BMore (x2444x@1)than it really should
            
               F#You (244322@1)gave me a heart shaped bruise

               C#Guess (x43121@1)I'm not over you

          EbBaby (x43121@3)it hurts so good
 
               BMore (x2444x@1)than it really should