you may not, but you might see alot of things different from him. My best friend is the most gullible person I know, when she was younger people did pick on her, all you can do is hint by saying I dont know how you can let them treat you like that. My mate got alot stronger as she grew older but she's still gullible but thats what makes her the special sweet person she is. Some people may look at you and think you're being a bit controlling for telling him what he should be like.