I've only heard it twice in the last two weeks, and I listen to the radio most of the time. I don't know who it is! I always catch the end of it -- it sounds ilke Mary J. Blige, but I don't think it is (although I'm not sure!). The chorus goes, "I've been too strong for too long, now I can't be without you baby! i stay up at night until you get home because I can't sleep without you baby" or something like that... help!