Most Helpful Guy
Nothing unless you want him back in a negative way like spreading your legs all the time to keep him around.
Most Helpful Girl
only you know what led to the break up... was he depressed because of something? or did you do something wrong. best thing to do right now is leave him be for a month or two and see if he wants to get you back meanwhile just try to move on that is the best thing to do right now and if its meant to be he will come back. its either that he is an A hole or that you did something to piss him off or maybe he is going through some personal things family or something and he just needs one pressure less on him that is dating. yes i am not a guy but i observe people and their behaviors a lot