Most Helpful Guy
First of all, i'm of the opinion that one doesn't get over something, but rather learns to live with it. Besides, these things will help:
Friends, a positive attitude and new, positive experiences - And time. Have patience. Talk about it as well, dont bottle it up, itll just start to fester deep inside you.
Most Helpful Girl
it takes time, once you distance yourself from that person you notice how people really should act. it's really hard to find peace though. it took me a few years to realize everyone isn't like that and the damage they caused shouldn't make you act differently or think like it was your fault. you have to stay strong and try to stay positive. try to see everyone as if they don't have the same intentions