CONFUSE..... JEALOUS ??

 study alone at student square...  i meet my old classmate...  we are talking to each other for a few minutes... but everything change when my friends from the other section comes to me and ask me about french note from alinda... i and my friend have the talk in the short time.... then after my friend go away.... i talk to he again but unfortunately  his mood already change.. he look angry and hate me so much... I am so sad... what that I already done to him?? why he treat me like this ?? only because I talk with other guy ?? what in his mind ?? he always like this.... be honest he hurt me so much.....