I am a hell lot confused?

mine was an arrange marriage.i m more than happy wth my hubby n in laws.before marriage i used to talk to a guy who later got serious wth me whn i revealed i m getting married.its been 5 yrs nw the matter goes on...he threatens to kill himself or his frnds call n stay hez going crazy whn i dont talk....i care 4 him bt i m vry clr to him that i hve made my choice n am happy....what do i do to make him understand that i have moved on....nw its his turn to move on...?