PLEASE HELP...partial lyrics driving me crazy!

I have had a song in my head for months. I would like to find it online but have had no luck since I clearly don't know the real title or artist name. Male singer...african american (sounds like The Dells' lead singer) circa late 60's to early 70's the lyrics I have are:

Can't be by myself, can't sleep by myself, can't eat by myself" and at the end the singer says "Oh, be by myself"

Hopefully someone can help!?

Is it

I Kinda Miss You - The Manhattans

http://www.youtube.com/watch?v=GuMW-e3V9cQ

Unfortunately it's not...Thanks anyway!