"The subject of this film, isn't new on the Italian cinema. A young second wife have sex with his husband young son. So I suppose that was the reason that this film isn't famous."
Try searching on YouTube: "The Second Wife 1998 full movie" – you might be pleasantly surprised.
The film follows the turbulent life of a young woman, Emily (Ara Mina), who marries a wealthy but emotionally complicated older man. However, the shadow of his deceased first wife looms large over their new home. As Emily tries to build a life, she discovers that the family—including her stepchildren and the household staff—secretly compares her to the "perfect" first wife. The plot thickens with psychological manipulation, forbidden attraction to her stepson, and a slow-burn descent into paranoia and betrayal.