Lyric discussion by maty 

Cover art for The Kill lyrics by 30 Seconds to Mars

Other than what has already been said, If you think about it, this song could also be about him breaking off of his fake him, leaving the fake him behind, killing it and becoming his real self..

I like to take it both ways because I can connect on both levels. Knowing that trying to be someone you're not isn't going to work neither for your partner nor for you (even if he/she falls in love than, its not you whom he/she loves but the fake you and also you might try to be the one you wanted to be, but you're not that person anyway)..