Having some troubles with my girlfriend.?

Me and my girlfriend have been dating for about a month and a half now. When we started dating we both really liked each other. She always told me how she liked me so much and she really hoped we work out. Well every other morning she would text early and say morning or she would talk to me all day. This last week about wednesday she never texted me early or the whole entier day. Well i was busy but i never told her. Well she just never texted me. Later that night i said something and she got mad and said bye. Well we didnt talk for two days and i said sorry and she said its fine and got over it. Well for about a day she was acting normal but the next day she would tak an hour to text back or not say night and just go to bed. The next couple days up to this she never texts me early and we barely talk two hours a day. She says she still likes like she did but i just dont know what to do. I mean her friends say she still talks about me but she just keeps doing this and idk if i should say something or she will just say im flipping out or should i just break up with her?