What is that song?!

I have been trying to find out a particular song that plays in the background when X and Andrew is at Jill's wedding. It starts to play when Jill introduces herself to X and continues to play when X sees Jill's brother kissing Andrew and.

The song starts with a beautiful piano intro and goes something vaguely like,

" by your silence i can tell you may not want to be discovered, the burning yearning...by my silence let me show you just what ....set me free, let me be, the one who pays the price, who makes the sacrifice.."

I've been googling as much of the lyrics as I can hear but nothing comes up. I listened to all the songs on the sound track on Amazon and none of the songs on there sounds like it. Please help. I think it is such a beautiful song!

Thanks in advance