If you are desperate to get back with your ex, try paying them a simple compliment or two when you do meet up.
Remember how it was when you were first together and you were eager and happy to pay your other half compliments.
Maybe you got out of the habit of paying compliments to each other, as often happens when the original spark of attraction starts to fade.
Everybody, both men and women, likes to receive compliments , it makes them feel good about themselves.
There is no need to go over the top with the flattery, it will only come over as false if you start gushing "how great they are", but if you can make a genuine compliment to your ex about their clothes, a new hairdo, or any little new thing that you may notice different about them, This will let them see that you still have the qualities that attracted them to you in the first place.
It will be hard knowing what to say for the best when you do meet up, and the last thing you really want to do is say something that will cause friction between the both of you, so conversations between you maybe strained when you have just broken up, but a couple of well placed sincere compliments will help take the stress away from your relationship.
It will help start building trust between you again, and from that point you can try to work out the problems in your relationship.