Britney , Justin--On and On里面的歌叫什么?谁唱的?

这首歌叫On and On，
　　Nick Lachey唱的

　　On and On
　　When the darkness finds the night
　　My heart still beat for you
　　In your eyes I see the lie
　　What can I do, I'll try my best to walk away
　　So I don't have to feel the pain
　　It goes on and on, on and on
　　And this emptiness I feel goes on and on
　　On and on
　　As I cry myself to sleep I just can't go on
　　On and on
　　When this love I feel for you is so strong
　　On and on, on and on
　　Why can't I feel your heartbeat next to mine
　　The way it used to be
　　I love that purpose that is so right
　　I need you to see I try my best to walk away
　　But I just can't ignore the pain
　　It goes on and on, on and on
　　And this emptiness I feel goes on and on, on and on
　　As I cry myself to sleep I just can't go on
　　On and on
　　When this love I feel for you is so strong
　　On and on, on and on