Teenagers will lie to avoid trouble, out fear, any reason really. Any person who says they never lie, that they're always honest, lie about exactly that.

Perhaps your husband thinks of his children as 'golden', perhaps he's afraid of confronting them, of being too harsh, too strict, there could be multiple of reasons.

However, he should believe you when you come to him with something. You need to sit down with him and explain to him how it makes you feel and that it's not OK for him to dismiss what you have to say.