not to be THAT guy but does it matter? I mean, attractions can be anything lol I wouldn't be attracted to a flat chested girl (or a girl at all lol xD) since I thought guys liked big boobs but eh. people mature, get over looks, that sorta thing. anyways, good luck to ya!
I'm a bisexual girl, but I love love love girls with small breasts. I mean, big boobs are great, they usually get my attention at first, but when it comes to reality, small boobs are definitely a win-win.