That's a good question. I don't think he was talking about Lisa Marie in this song. I heard that MJ may have been involved with Nanny Grace at one point and something could have happen between her and Jermaine. However that is just speculation. I'm not by any means saying it's a fact. I think the Randy/Jermaine situation could have been inspiration for this song. It's funny I was just watching this movie called The Five Heartbeats with Robert Townsend about a singing group. There's a part in the movie where the character Duck fell in love with this girl as a teen. They later hook up after he becomes famous but the girl also messes around with his brother JT. The truth comes out when Duck decides to marry the girl and he finds out she been messing with JT. So the brothers fall out and the group ends up breaking up. It's a really good movie it kinda reminds me of the Jacksons. Anyway it could be about a female he had a relationship with that the public wasn't aware of as well. Who knows? Maybe the whole song could just be a metaphor as well.