How do you get over your Ex?

How do I Get Over My Ex? I hate her.....I know it makes no sense but I still have feelings for her.. She does have a new boyfriend and we got in a little twitter exchange and I showed her this picture (A picture of 50 cent smiling with a caption that says "That Moment You See Your Ex With a Down Grade") I'm not gonna lie shes a 10/10 but I dont f*ck her with anymore....but I still have feelings for her So how do i get over those feelings and her? By the way I'm a guy.