Want to tell you how much I love you but I know I can't

Can't ever seem to find the right words to tell you, but yet here I am again.
Been wanting to tell you for so long that I love you, but don't know where to begin.
I'll love you forever.
You'll always have my heart, even though you don't know that it's so.
The fact that we could never be together, really hurts, more than you could ever know.
But yet I'll never be able to tell you just how I truly feel inside.
I guess it's a secret I'll keep forever, until the day I die.
Cause you're already taken and I'm way too afraid,
That if I tell you I'm in love with you, it'll ruin our friendship, and then you'll walk away.
So safe in my heart until the end of time, my love for you will always stay.
Couldn't bear the thought of losing you,
Because baby girl, you're all that I've got.
Why do I have to be in love with you?
Why can't I make these feelings stop?
If only you were mine, I swear, I'd give you the whole damn world.
I'd stand on top of the highest mountain top and let everyone know that you were my girl.
I'd take you in my arms and never let you go.
Look into your eyes and tell you how much I love you and that you're beautiful.
It hurts so bad, and breaks my heart to know that will never come true.
It's tearing me up inside so much and I really don't know what to do.
Always tend to want something that I know I can never have.
Why I feel this way for you,  I'll probably never understand.
Obviously I'm attracted to you, and you've always been there for me, when I needed you the most.
When I was on the verge of suicide, you were the one that saved me and gave me hope.
Never thought I would fall in love again after what I've been through.
But the love I feel for you, there's no words to describe how much, but I know that it's true.
Didn't ever believe that you could love someone so much that it actually hurts.
But here I am with my heart feeling like it's about to burst.
Trying to keep my feelings for you locked away,
Is proving to be harder and harder with each passing day.
You have no idea how many times a day I catch myself thinking about you, or picturing your beautiful smile.
Been trying to lie to myself, but who the hell am I kidding?,
I've had these feelings for you now, for a while.
Maybe in a perfect world we could be together,
But at least when I close my eyes I'm able to dream of us being together forever.
All my love for you is locked away and only you hold the key.
You'll never know just how much I love you, and just how much you truly mean to mean to me.