I don't own any of the guys in Big Time Rush, and I don't own the lyrics used.
This is a song-fic based off the song 'Sorry' by The Jonas Brothers.
Lyrics are in italics story itself is regular font.
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BIG TIME SORRY

Broken hearts and last goodbyes
Restless nights but lullabies
Helps to make this pain go away

Tears streamed down Renee's face as she looked into Kendall's eyes.
"So I guess this is goodbye…" she whispered

I realize I let you down
Told you that I'd be around
Buildin' up the strength just to say

"I'm sorry." Kendall said gently.
She shook her head and walked away.

I'm sorry
For breakin' all the promises that I wasn't around to keep
It's all me
This time is the last time I will ever beg you to stay
But you're already on your way

Kendall opened his mouth to call her back, but the front door slammed and she was gone.

Filled with sorrow, filled with pain
Knowing that I am to blame
For leavin' your heart out in the rain

Renee trudged home, tear clouding her vision and rain clouding the sky. It began to pour and she sat down on the curb.

And I know you're gonna walk away
Leave me with the price to pay
Before you go I wanted to say

Kendall let a tear slide from his eye before punching the wall and running out into the rain after Renee.

That I'm sorry
For breakin' all the promises that I wasn't around to keep
And it's all me
This time is the last time I will ever beg you to stay
But you're already on your way

Renee tilted her face up and closed her eyes, letting the rain stream down her face along with her tears.
She heard footsteps and turned to see Kendall running towards her.

I can't make it alive on my own
But if you have to go, then please girl
Just leave me alone
'Cause I don't want to see you and me going our separate ways
Begging you to stay
If it isn't too late

"Renee…" Kendall choked out, catching sight of her.
He pulled her to her feet and into his arms as she cried into his chest.
"Don't go..." Kendall whispered "I can't survive without you."

I'm sorry
For breakin' all the promises that I wasn't around to keep
It's all me
This time is the last time I will ever beg you to stay
But you're already on your way

"I'm sorry." Renee said and she kissed him gently before turning away and walking out of his life.

But you're already on your way…

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Okay so that's not exactly a happy story.
I actually rewrote this to make it with Kendall rather than what it was before this.
Let my know what you think!
Love and lions, Allison.