I love you

You don't know the pain I suffer
You don't see the tears
I want you to know the way I love you
And have loved you all these years.

I know who you are and ponder
How you've cried from what I've done
Life without you is eternal night
And all I want is to see the sun.

To know that you will cry no more
And feel my loving you
I only want you to know
That those three words I say
Every syllable is true.

I love you.

Murder

When I'm lost you seek to find me
But you waste me on most days
You keep me close at hand
Because I'm worth more than your pay.

I have at least 3 meanings
One of which is after one
I represent an also
And identify the person to which something's done.

I represent the end
But religiously i'm a beginning
I'm always unavoidable
But to give me would be sinning.

What am i?