I think this is about a girl he was never with but always secretly admired and wanted to be with, yet never took the chance to ask her out (I only got one life to live, why not take a chance/I only got one life to live, tired of waiting on the stands). Then someone else came along and took the chance and now the girl's in a serious relationship with him, and the secret admirer will never have a chance to be with the girl like he always dreamed of since she's with this new guy, and this is so hard for him to accept that he kills them both (it's hard for me to accept that I will never have you/and when I show up at your wedding I'll bring flowers and a shotgun).
Either that or it was a girl that he was with but then they broke up and she started dating someone else and he's so frustrated and bitter about the fact that he has to just sit back and watch her be with someone else that he "puts life back in his own hands" and ends it.
I think this is about a girl he was never with but always secretly admired and wanted to be with, yet never took the chance to ask her out (I only got one life to live, why not take a chance/I only got one life to live, tired of waiting on the stands). Then someone else came along and took the chance and now the girl's in a serious relationship with him, and the secret admirer will never have a chance to be with the girl like he always dreamed of since she's with this new guy, and this is so hard for him to accept that he kills them both (it's hard for me to accept that I will never have you/and when I show up at your wedding I'll bring flowers and a shotgun).
Either that or it was a girl that he was with but then they broke up and she started dating someone else and he's so frustrated and bitter about the fact that he has to just sit back and watch her be with someone else that he "puts life back in his own hands" and ends it.