Most Helpful Guy
Maybe you felt like you wasted your time dating him. When dating people everybody has flaws. The best way to get over an ex is either by cutting them off completely or by dating other people and moving on that way. I think the easiest way to get over him is by focusing your time and energy on yourself more. Go out and do fun things, enjoy life, don't focus all your thoughts and energy on him. It will be hard to do since you still run into him. But with time and patience maybe those thoughts about him will eventually go away.