These chicks don't leave me and my boyfriend alone?

Every morning at school, me and my boyfriend go into the hall so we can talk and stuff. Outta no where, this group of really annoying girls (that we don't even know) will start making retarded jokes and laughing hysterically. They're always like,"Omg you guys need to kiss right now! Why don't you act like you're going out? Are you not a proud couple?!" I told them to please go away, but they don't listen. Our high school isn't big at all so we can't really go somewhere else... help!