I can't remember what this song is!?

I cannot think of the name of this song. I thiiiiiiiink it's an older rock song, but not positive, I've heard it on the radio for an older/classic rock station. My sister used to play this a few years ago on guitar over and over again. It's a slower song. The intro at least, maybe even the majority of the song is just the same guitar line over and over. I think it's a pretty long intro, then the only words I can remember are the first ones, "Now, baby" and then the guitar part repeats. I could be way off, but the singer has a Brett Michaels kind of voice, although I don't think it's him. Just around that area. Anyyyything will help!