It is all part of learning how, when , how much and what we have to do to get along. How to have a relationship is a tough thing to do. The old saying: "It takes a LOT of coal to make one diamond" comes to mind. You are just now learning how to Mine.
Maybe he doesn't love the girl and doesn't want to be stuck in a relationship with a girl he doesn't love, maybe he wants to end it now before she gets any deeper in love with him and it'll hurt even worse when the inevitable happens.
1. there is a very small percentage of guys left in society, who are not total jerks, sad but true
2. Alot of girls do the exact same thing you are talking about to guys, its happened to me more than once now
now, there are a few possibilites here, either you are dealing with one of the jerks that make up about 90% of the male population, and he was just playing head games with you, and messing with you, because he is a jerk, or, he is one of the good guys who are left, and he does not feel the same way about you, as you do about him, and so he is going to let you down now, so as not to hurt you more later, its the most honorable thing he could do in that situation, one way or the other, move on from this, pick up the pieces, and find the guy who will love you, but who is also, not one of the many jerks running around.