Can Any1 help me identify this song???

There's a song from around '89/'90 thats by a girl, like a slow R&B song that I'm trying to remember the Title or at least the artist's name. The lyrics go "At last, I finally found some1 to love me, at last, I finally found some1 who cares, Bbaby you're not the first but you'll be the last...We're no good without each other and we deserve to have one another at laaast"

PLease help me I'm very frustrated trying to find the Artist name or title to this song. I'm from South Florida, don't know if this song was popular all over or just down here.

Thanks so much

Someone on another website thinks its called "At Last" by a group called New Voices or True Voices but I cannot verify/find the song or the group.