a break

hello
Me and my girlfriend is on a break rigth now, something i decidede to do. I am not sure if it should be her and me together, we have been together for 3 years. She says I have changed a lot, and that she misses the old me, and the things i used to do. She complains that I dont hold her hand in public or kisses her often, but I dont think about that stuff, it is not in my natur to do those things. She went on a vacation for two, where I didnt really missed her and she missed me a lot, is that a bad sign ? I dont think i really have missed her when she has been gone.
but my question is, what should I concider while on a break? I know that you people cant make the decision for me, but I want to know what I should think about to make sure that I make the rigth chocie.

I apologize if there is some mistake in my english, english it not my first language