What waz my fault???

I m 21yr girl.. I fall in love with a boy on fb.. I know him frm school time.. First time … We talked on fb.. And after 1 month .. He prps me.. And I ansd him yes… Nd he slowly started to do some non veg chatng… And I also shared some prsnl pic to him .. But he alwz used to share our secrets to his frndz… Nw what can I do? Plz help me. And nw my situtn is lyk that I can’t sleep properly.. I want to do something like sucide…