Something Like Fate by Susane Colasanti
Lani and Erin are bonded for life. One thing that connects them is their fascination of fate. Lani wonders how much of our lives has already been decided and how much we can actually influence. Since the Unknown can unexpectedly change our lives forever, how much can we really control? From the minute Lani meets Jason, she can't deny the intense connection they share. It feels like she's known him forever. She's not sure if he feels it, too. But it doesn't matter. Because Jason is Erin's boyfriend. Lani is determined to ignore her feelings for Jason, no matter how powerful they are, rather than risk hurting her best friend. How long can Lani keep running from the boy who might be her destiny?
I really like the sound of this and I love the cover:) It's published (in the US) in May 2010. You can check out the author's website here