How Do I Let GO???????

first off stop thinking like that he's probably not good enough for you yes im in favor for cutting off all contact from the person thats one way to distance yourself from him if someone doesnt show how much they care for you then there not worth your time or attention i know its hard just remain strong most likely he would try to get you back but then thats when you have to tell him that you want to remain friends or if you change your mind thats your decision