My girlfriend just randomly ended our amazing relationship (please help!!)?

Be careful of what you wish for, you may get it back.You acted like you didn't want to be with her. You sent that negative message out and she picked up on it. You told her you didn't know if you wanted to be with her. That's when you hurt her. Since you didn't know she helped you to see the whole picture very clearly. But it was not what you wanted.Your plan back fired. Looks like she moved on with her life that fast just as fast as you said you did not know if you wanted to be with her. What you send out in the universe is what you get back.