cake and eat it too......

I am looking to find out who sings this song...I am sorry I do not know many of the words, as I had it on CD and lost it and have not listened to it in so long.
It is a woman singing and she sounds similiar to sade. (It could be her, but if so I do not know what the name is)

The song basically goes " Can I have my cake, can I eat it too? Would you...................."

It's a slow song and very nice.

THanks

It sounds like John Mayer's song Break Away. It goes like this:

can I have my cake?
can i have you too?
would you follow me?
could i ask you to?

Could not find for you decent previews, but I found a "home brewed" cover in youtube. You'll get the idea, the melody should still be the same: YouTube - john mayer break away acoustic cover

John Mayer is obviously a male of course, but could this be the same song, only covered by a female singer?