Somone help me please!

Okay, the girl I've been wanting to date since 8th grade actually said yes, we went out for 2 months, and got very deep very fast. She broke up with me on saturday for unclear reasons. I felt the shittiest I have ever felt in my life, but then yesterday in class(guys go ahead an make fun of me) I just broke down and cried... After about a half hour of this I stopped, and I felt nothing for my ex. I look at her and feel nothing, I think of her and feel nothing....is that normal? Someone anyone help!