I DID NOT WRITE THIS it was wrote by soheexsarang~sohee production~ JONGI gave a hint to the meaning of the song and I think I have it all down

meaning of the song:
the guy kills the girl he's talking about..after killing her, from the shock he get's a spilit personality, which you notice with the lyrics..one moment he threw her away and the next moment he says she threw him away

quote: Don't love me, I threw you away
quote: I had no idea that more excessive love would strangle you ~ A love that lost its way, I fill up with tears
quote: I won't forget my pain of being thrown away
quote during rap: Even the reason I love became a sin

half of the man: knows he killed the girl (aka threw her away) and is sad
the other half of the man: can't live the guilt and suppressed the memories with lies that he believes she threw him away

basically: the girl must have done something like want to dump him, or leave him for someone else, end it and he kills her because he loved her too much..AND HTIS WHERE THE SONG BEGINS..after killing her he has memory lose

versus 1:
My hands tremble more ~ I'll lose my focus shortly
Why my broken legs standing here?
I can't even remember, I become scared
Where are you, who has laughing until just now