Simple letter for friends

Maybe just one sentence of yours
But it's my reason to carry on
Maybe just a simple act
But it's my reason to smile

Maybe this's just a simple letter
But I hope you can show your smile
Maybe this's just a simple act of mine
But I hope you can go forward

There're many words to show how great I'm
There're many words to show how bad I'm
There're many words to be my word
But i don't know any word for you

"Thanks" is a good word
But my gratefulness surpass that word
"Love" is a good word
But my love surpass that word

There's no word that can describe
how grateful i'm that I have you
and there's no word that can describe
how much I love you..