Working out a plan to get your ex back can be a little difficult at times, but a lot of your first moves can be based on the communication between you two.
  You want to be careful, because this is a fragile time and doing the wrong thing can devastate your chances to reconcile with your ex and get things back on track.
The wisest option, though not necessarily always possible, is to sever contact entirely with your ex and force him to deal with his choice to leave you.
  This is the best thing you can do because quite frankly, to do anything else could end up causing more harm than good.
  He needs to come to terms with the consequences of his actions, or he'll never understand their full impact on YOU.
For him to realize what not being in a relationship with you means, you have to force him to actually live his life without being in a relationship with you.
  Many women think that their best move is to be with him and stay close in the hope that it'll rekindle how he felt and bring him back...
some even go so far as to continue sleeping with their exes...
This couldn't be more wrong...
what you're basically doing if you take this route is giving him ALL the benefits of a relationship with you, without any commitment or consideration of how YOU feel.
  It's simply not fair to you, and he'll be plenty satisfied being able to have you AND whoever else catches his eye...
it simply won't get you anything but more hurt as he'll essentially just be using you without regard for your feelings.
Even if it's not possible to fully cut off contact, you have to cut off your relationship.
  If circumstances make it necessary, you can continue to see each other around (such as if there are kids in the picture) without having a relationship.
  Give him no passion...
chances are good he'll start to miss it.