How do I get over my now-ex boyfriend?

Keep yourself busy to not think of him. Live life! We should never have to depend on others for our happiness. I know it hurts. Trust me.... This will make you a stronger person. Take up a new hobby or take a vacation. Don't linger on it. It's done, there's no turning back from what he did, and now you have to move on. I know it's easier said than done, but if you just focus on your own happiness, then I promise that it will get easier. Hope I helped. Good luck :)