Reverse psychology

My ex fiance and i broke up in march after having a pretty bad fight. the past month and a half we've been talking about working on things and taking things slow. we both knew what was needed to be done in order for us to work. and last saturday the 27th of april we hung out all afternoon and most of the night talking about us and how much we loved each other that nothing is gonna come between us. every now and then though we would get into an argument and he would tell me that i dont love him and that this wont work. i would tell him too but only cause we were both so frustrated about the break up and other minor problems we had. so then just this past friday he told me that he is with someone else and he doesnt think we will work after thinking we would. you can imagine my pain. what im wondering is that if reverse psychology work to get him back? and how do i go about to doing it right? i mean it cant be possible for him to forget what we had and his feelings for me just like that can he? i want him back, i love him dearly and deep down inside i still feel that he loves me too.

First thing first you need to stop saying you dont love him when you do when you are arguing, he may not realise that you are only doing it to hurt him. maybe he truly belives you dont. Myself I would advise against any reverse pyschology as it is liable to backfire, you are best to be truthful. Give him a bit of room and put it into writing how you feel and mail it to him. If he truly loves you he will come back. Ask him how he feels and offer him a chance to talk about it. Don't get all down too heavy with the whole "we are going to be together forever" kind of stuff after what has happened. Just be truthful about what you want, how you feel and just build a base with him again