how to make your ex jelous and regret what he did to you and want you back

act as if you dont care.have fun around him or even not around him. act as if your happy without him.dont look at him. pretend that hes not even there.if he gets a girlfreind be nice to her but know that the only reason why hes going out with her is too make you jelous.get a about him alot even if your ex isnt around ,it will make you feel better too.but the best part is when he wants you back.....DONT TAKE HIM BACK!!!!hes going to relize that hes nothing without let him be nothing without out you.