my story was kinda the same, 3 1/2 years... and she left me for no reason for someone else, now 4 months later, she regrets it and shit.. but that was pain for the first two weeks, i couldn't eat or sleep... i loved and cared about her soo much and she did good in school and didnt do drugs, now she cant pass her classes skips school, drinks and smokes weed.. but its hard at first, but hey shit happens and im more happy now single seeing lots of other girls...things wont work out sorry to say, just leave her and move on... i cant even really be friends with my ex. doesn't work like that