She may have been 18 or 19 when she dated him. I don't think it was anything other than a couple of dates max. They went to a whitesnake concert together apparently.
This girl was really beautiful back in the day and caused a lot of mayhem, breaking up a few long term relationships without really knowing what she was doing because if she gave a guy a sniff that she might be interested he'd be after her like a shot (the Kate Moss effect). She was annoying really, very self centred but you could really see why she had the ability to attract someone like Robert Plant. I have no idea what she is