Rap song

I heard it on the radio recently
The lyrics I caught were:
" I can taste that im not alone. You dont need nothing at all but me"

It was sung by a girl.

Maybe, just maybe...you are talking about

Nelly Furtado - Say it Right ??

I know, the lyrics are different from what you write here in your post, but this song's lyrics are hard to catch, so that's why I propose this song to you. No harm from checking it out here: YouTube - Nelly Furtado Say it Right