Why does my ex boy friend keep coming back to me on facebook?

his name is cody bloothoofdyou tube sensation and we used to date last year over summer .he cant leave me alone and i cant leave him alone. a few months ago i added him as my friend and he accepted it about ummmmmm 3 weeks ago.i just found out that he was in disguise as another person on facebook he disguised himself as Eduardo Eduardoo. i really want to help my ex boyfriend.i cant get over him he also told me to send him a nude.what should i do? i mean what do u guys think? put all ur advice and suggestions into this pleez i need ur help thnx :} -Faith Cody Bloothoofd