The key of the song: G#
Tempo: 128BPM
Chord progression: IMHO it is very simple: I-iii or Ab-Cm.
If I am not right please correct me :)

(...)
  Ab (xx1114@1)         Cm (x3101x@1)          AbI (xx1114@1)love you too much to let go
                  Cm (x3101x@1)                  AbHow'd (xx1114@1)you think I feel when you call my name
              Cm (x3101x@1)               AbYou (xx1114@1)got me confused by the way I change
                  Cm (x3101x@1)                  AbHow'd (xx1114@1)you think I feel when you call my name
        CmMy (x3101x@1)name, say my name baby