Movin on from my first love who screwed me over really bad?

ok soo long story short, im 18 and she is 17...we broke up in march, like the 14th cuz we didnt wanna be tied down and we wanted to go out and have fun and do our own thing...we were together for like 10 months...but anyways, her best guy friend whos in the military came home in february and they hung like all the time and i wus cool wit it..but anyways march 15th after the day we broke up i asked her on several occasions if theres anything goin on her with her best friend cuz i feel like there more then friends, and she kept saying no and that there just best friends..now i had this feeling cuz she had my phone cuz she broke hers and she wus texting her best friend sayin like hey baby and just **** like that and stuff you would hear couples would say..and i asked her about the texts and she said she set me up and told him to go along with everything she said..now regardless of this being true or not, you dont play games and mess with my emotions like that..but anyways she deleted me off her myspace like a month ago and i find out a few days later her and her best friend r now dating since february!!!...my friend showed me her myspace page and its all about her boyfriend..and still till this day she keeps saying there not dating but yet they have pics of them kissing and stuff...soo the only time i have any contact with her is at work on the weekends :( :(..im trying really hard to forget about her and move on but seeing her 2 days a week isnt helping...idk what to do??...i feel like she hurt me wayyy more after we broke up, and that our reason to end it was just her way out of our relationship cuz the night we broke up she already had a man for an entire month..and last week she texted me wanted to make peace with me but i told her i couldnt cuz not only did she lie to me but she cheated/played me when i wus with her, and i told her i couldnt make peace and be friends with someone who can do that...i dont talk to her at all, i juss cant and dont wanna, it hurts too muchh!.....im sorry i wrote soo much, but if anybody read all this, thanks soo much! u made my day :) :)