The 'Spider-Man 3' actress says she immediately felt a connection with the Razorlight frontman and just knew they were meant to be together.
She revealed to Grazia magazine: "I believe that people are meant to be together - you find people you just have a connection with. That's fate."
The 25-year-old star - who previously dated actors Tobey Maguire and Jake Gyllenhaal - also insists she is through playing games and is now enjoying a "simpler" relationship.
She explained: "When I was younger, I used to want something I couldn't have or someone who didn't treat me right but I think everyone goes through that.
"It's much simpler to be with someone who doesn't play games. It's too much drama otherwise. The easiest relationships are the best for you usually."