This song is overall about a relationship that he didn't want to end.

The chorus:

"Because days! Come and go!
But my feelings for you are forever
Because days come and go
But my feelings for you are forever

One last kiss...
Before I go...
Dry your tears...
It is time to let you go..." indicates that he has already lost his love in this relationship and is ready to begin getting over her but wants "one last kiss"

However I feel it digs deeper

The lyrics "Take these memories
That are haunting me
Of a paper man cut into shreds
By his own pair of scissors" Show resentment to himself. Basically it implies that he could have stayed with her and been happy, but ( and this is just my opinion) either neglected the relationship or pushed her away, basically cutting his "paper self" to shreds when he realized that HE was the one that drove the relationship away.

Furthermore he goes into the many typical stages of heartbreak: Replacement, Numbing, etc. This is demonstrated in the lyrics:

"Sitting by the fire
On a lonely night
Hanging over from another good time
With another girl...
Little dirty girl
You should listen to this story of her life

You're my heroin-
In this moment I'm lonely
fulfilling my darkest dreams
All these drugs, all these women
I'm never forgiving...
this broken heart of mine"

But really what makes this song so fascinating is that it isn't a linear story and you have to find your way along to piece it together.

It is a great piece and I hope for more passionate and powerful music from Papa roach.