Finding book help?

I read this book around 5-6 years ago now and can't for the life of me remember what it's called or what the main girl's name is. The front cover has a picture of her face (blonde hair-blue eyes) with a cyber space-like background and on the blurb she gives out this website address.The books about her traveling back in time with this rockstar boyfriend of hers who is weird and mysterious and i think has blue hair,she at one point goes to work for her grandmother again back in time i think but pretends to be someone else and she meets with her family,i know i haven't given much lol but it's all i can remember which is a shame as i loved the book,very teen fiction,the title may have the words virtual reality or cyber space in it or those words may appear on the back cover.I'd take a guess at mid-'90s. Any help would be appreciated.

Yes i have looked there,nothing unfortunately,thanks for replying and trying to help though :)

Kiwi, have you tried http://whatsthatbook.com

It's a good book search site. You give them all the info that you have on the book you're looking for, like character names, plot details, etc., and they'll do their best to find the title for you. You've got enough unique details about the book you're looking for (traveling back in time, rockstar boyfriend, etc.) that someone at that site just might know this book. It's a free service but you have to register there with an email address. Good luck in your book search! :-)