求歌一首，謝謝謝謝謝謝

Friends 第十季的一首插曲，也經常在電台裏聽到。哪位大俠能告訴我這是誰唱的，歌名，能在哪裏下載？非常感謝！

大概的歌詞如下：
....i am not the perfect person, i never meant to do those things to you...
and i just want you to know, i found out the reason for me, to change i used to be
.....
and the reason is you...

i'm sorry that i hurt you....