I agree that Eddie was/is a jerk. His open hostility and back biting of Preston was IMO due to jealously more than anything else. He probably secretly thought Preston's designs were top drawer and felt the competition strongly in that area. I am guessing he was also jealous of Preston's looks and class. Preston is a handsome, hunky man with a lot of talent and class. He is also self confident and exudes a certain aura of "cool". Eddie is just average looking, flighty and fluffy acting, moderately talented (IMO), and is about as "cool" as the dorky guy in school who made fun of others to get attention.