I'm pretty sure the last little verse is as follows:
But my enemy, it's your name on my lips
as i go to sleep and i know what little i've known of peace
yes, i've done to you what you've done to me
and i'd be nothing without you my darling, please don't ever leave.
please don't ever leave
meaning that he's talking to "the enemy", and they are an integral part of his life.
I'm pretty sure the last little verse is as follows: But my enemy, it's your name on my lips as i go to sleep and i know what little i've known of peace yes, i've done to you what you've done to me and i'd be nothing without you my darling, please don't ever leave. please don't ever leave
meaning that he's talking to "the enemy", and they are an integral part of his life.