There's really only one way to get your ex back these days, and it's Zac Miller's books. He has the link right here how to get your ex back.
Basically Zac Miller teaches you the very first strategy to get your ex back, and then keeps the ball rolling. He really is the relationship expert when it comes to getting your ex girlfriend and/or your ex boyfriend back. He knows his stuff and it shows in his books. I would really suggest checking them out in order to really understand what I'm talking about.
Basically you get all the things you need; he really throws the kitchen sink at you. He tells you what to do if you run into them, if you cheated, if they contact you, if you contact them, etc. It's a lot of information and he leads you every step of the way. What a great guy he is.
Props to Zac Miller for what he is doing and how he is helping so many people. Good luck in your endeavors.