What should i do bout my ex ?

so here's what happen with my ex girl we were going out for 364 days almost one year. and right before the year mark i cheated on her with some girl from idaho that was bearly hear for a couple of days and she found out cause she pretty much got the hint from me not picking up when i was hanging out with her. so i told my girl at the time what happen and everything started going south we went to lunch to talk bout it and she was a like , what you cant handle a serious relationship !!! NOT MAN ENOUGHT , so to me it sounded like she wanted to break up so i said whatever were done and she stormed of. but i knew from when i told her that she was sad and heard that at parties she would be dancing then out of know were start crying on the danced floor. and she still wanted me back but there was the problem with the trust issue but then some how the tables turned like really fast she started going to the beach ALL the time with her girlfriend and started not picking up my phone calls or tex till she felt like it when it was bout when she would go to sleep. so all of a sudden im not her number one priority and im telling her i want her back and she says give her time . so now im calling her all the time, wanting to hang out , but she doesnt want to . so i show up at her house cause i want to talk to her and wait for four hours cause shes not picking up my phone calls. she gets there and im crying that i want her back and im sorry bout what i did and i never want to doit again , why you cant pick up the phone and shes like cause were not even together . got mad and hauled *** out of there . got home went on her myspace and she deleted me from her myspace but still has the pics of us together. and know we we havent talked for about four ,five days. ohh and i was her first everything first , first love , first everything and i would want that back because theres not that many girls left like that. what should i do get over it and how can i stop thinking bout her and how could i get her back