Lyric discussion by AshJ 

Cover art for The End lyrics by Bullet for My Valentine

A loved one, or girlfriend if you prefer, dies. He's having all these memories as he's committing suicide through an OD of probably painkillers or whatever "there's no more pills to swallow".

But still, gotta love this song, reminiscing bout past relationships and whatever, we've all been at 'The End' at some point or another.

@AshJ "There's no more pills to swallow" can also means that he only had enough but not not enough to kill him.