Cameron Diaz says people are interested in her because celebrities are like the popular kids at school. The actress reckons people are fascinated about her private life. She said: "It's like high school - we as celebrities are sort of like the popular kids. "Everyone wants to know our business. "People make a big deal of it but it's not a big deal at all." Diaz hit headlines when she kissed and hugged ex-boyfriend Justin Timberlake at the premiere of their new movie, Shrek The Third earlier this month. Appearing on US television she said: "We're friends so it's OK. "It's not something you really worry about. "All you want is for the person that you care about to be happy and I think we both are so it's easy for us to see each other. "It's easy for us to greet each other even under the microscope of the world. "It's not really that difficult - it's no big deal." Aah sweet