gotta say I wasted a year of my life when my ex said that she wasnt sure about things....I tried everything to keep us together and make her happy. All it did was drive her away,I was your age...After that finally let go, Life was great again....it gets better. dont dwell on one part of your life so much....experience makes you a better person.let her go, see where it leads you two, she may come back and realize things, or not....if not guess what...there are millions of others for you to meet.