And whats the problem with not coming from a wealthy family? She's working hard for herself and family what's this ass got to do with it anyway? He's not the one dating her.
I think that guy is just jealousy manifested as anger. I think he is envious of Sahoon's popularity and socioeconomic position. Sahoon is the guy people are always talking about so that irritates him and then he acts petty by trying to drag Sahoon or the people around him down.