Say Anything - Good Charlotte

Say Anything - Good Charlotte
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Here I am on
The phone again and
Awkward silence is
On the other end

I used to know
The sound of a smile
In your voice
But right now
All I feel
Is the pain of the fighting
Starting up again

All the things we talk about
You know they stay on my mind (on my mind)
All the things we laugh about
They'll bring us through it every time (after time, after time)

Don't say a word
I know you feel the same
Just give me a sign
Say anything, say anything
Please don't walk away
I know you want to stay
Just give me a sign
Say anything, say anything

Some say that
Time changes
Best friends can
Become strangers
But I don't want that
No not for you
If you just stay with me
We can make it through

So here we are again
Same old arguement
And now I'm wondering
If things'll ever change, yeah

When will you laugh again?
Laugh like you did back when
We made noise till 3 am
And the neighbors would complain

All the things we talk about
You know they stay on my mind (on my mind)
All the things we laugh about
They'll bring us through it every time (after time, after time)

Don't say a word
I know you feel the same
Just give me a sign
Say anything, say anything
Please don't walk away
I know you want to stay
Just give me a sign
Say anything, say anything

I'm fallin', I'm fallin', I'm fallin' down
I'm fallin', I'm fallin', I'm fallin' down
Down, down, down

Don't say a word
I know you feel the same
Just give me a sign
Say anything, say anything
Please don't walk away
I know you want to stay
Just give me a sign
Say anything, say anything

(Please) Don't say a word
I know you feel the same (don't leave)
Just give me a sign
Say anything, say anything
(Please) Please don't walk away
I know you want to stay (don't leave)
Just give me a sign
Say anything, say anything
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I picked this song... because I feel like me and my best friend - the closest person to me in the whole world - my sister, if not by blood - are growing apart... And it kills me because she's always been the most important thing to me in the world, and it's like she just doesn't care anymore... About anything but her half-cocked internet relationships. About every few months I get fed up and try to work things out, we have a really long talk/almost fight, and we both make promises, things look like they will be better, and they never are. But I really care about her and I can't lose her. I don't know who I would be without her. My friends don't even know how to describe me without her. I miss her... But I feel like she just doesn't care.
On the advice of another friend I am trying to back off for a while... Give her a chance to miss me... But I don't know how to do this... I don't know what my life is without her, I wouldn't be ME without her. But... She can't even put in the effort to call me once in a while, or even text me back. She says how much she cares, but... I have trouble believing her...
It's like nothing matters to her anymore. She says she's trying to work through some shit and cna't deal with extra drama, but Not everything about me is drama. And she, instead of telling me ANYTHING, was avoiding me. And that kills me. How do I do this? How do I live without you? You've always been the one I can run to for help, but Now I can't. You won't even respond. I will always care about you, but... I need my best friend. And if you don't care anymore... You have to tell me so I can stop waiting.