My wife gets scandalous when her cousin-surrogate is here at home

Every time it's always the same, I let my wife's step-cousin come to spend a few days here at home, and my wife who doesn't know how to contain herself at all with the happiness that comes with it, ends up locking herself inside the room with him and stays there, all scandalously happy with his presence here at home... I think I'm a really wonderful husband to her!