I need help on dating plzzzzzz?????

Ok i meet my x at this golf course i use to work at and my brother still does work there and we hit it off and we started dating and she was the first person i had with. and after a month it was all good she wanted to come to indiana and meet my parents and go on vacation and all these plains and i went to her high school graduation and play on her brothers softball team and i painted her hole room in her new house that she was moving in to and one day we were siting in her room waiting on the cabal guy and i said u mean the world to em and she got all wired and pulled back and was not the same to me so i broke up with her and then realized thats not what i wanted and i am that type of person where if u dont text me back i keep texting because it annoyes me. but she went off to the lake and said she wanted time to think and she comes back and said she is not feeling it and more and i was so hurt i went back home to indiana to be with my friends and i find out she had ****** some other guy. what i am asking is how do i find some one better then her because it to me is killing me in side thinking about it i see her all them time and it sucks because she acts like it does not effect her at all. and her mom said give her time she will realize what she lost. so people what do i do wait and try and talk to her or just dont do anything at all????????