Well I still watch shows I have watched with exes, but that all depends on you if it affects you. No need to deprive yourself of something you had enjoyed just because someone broke your heart.
Get the ball rolling, and live your life! You just need to get in the mindset of "Screw her! I need to do me!"
I am currently in a relationship right now, but yeah curiosity brings me back to see what the exes are up to. But you know what? The new relationship is much better than the ones I had, and me looking up to see how it's going in their lives just makes me feel better. (Admittedly that I have a more accomplishing life than they do, haha)
I know evil, but once you get into the mindset, it becomes a lot easier to move on.