Hollyoaks/music question!?

Hi, i posted a question a while back asking about this song, but no one knew it, and everyone thought it was by "blue", eurgh.

Getting to the point..

Ok so on hollyoaks the other day Sasha was dumped and then she was all sad.

Calvin and Sasha were sat on the sofa, and they were having a heart to heart and there was this soft music in the background.

It was kind of r&b i guess, and it was a women singing in a soft voice.

Cant remember the lyrics much, but here goes.

"now I can breathe easy, yeah i breathe easy,

i, i never thought would missed you, and yeah 'something else"

and theres alot of breathe easy over and over.

So if you know it please please please tell me, thanks!!!