I'm looking for a book that I can't remember the name of. Can anyone help me?

It's about a girl who lives in Australia and goes to a private school. At a school dance with a boy's private school she meets a bad boy who she doesn't want to like but does anyway. At the dance I remember that she was wearing a green velvet long sleeved dress with a turtleneck. The boy gives her a ride home on his motorcycle. I don't remember what else happens besides the fact that they develop a relationship and fall in love. I do remember that I cried in it so it must have had a sad part. The last thing I remember is that the book cover is of a girl sitting in a cafe with a coffee cup but you can't really see her face. Thank you so much!