Why was they picking on me?

today im wearin this black shirt that says '' hating me won't make you pretty'' and im wearin white capris and on the top it says ''heart breaker'' so when i was in the hallway this girl and this boy was walkin to cl and like when the boy saw me he looked and his face expression said ''ewwww'' and the girl started laughin. is she jealous of my outfit an was she trying to make the boy laugh? (besides she does'nt like me)