One of the best film with Antonio Banderas I recently watched was called The Other Man starring Liam Neeson as the grieving husband. Laura Linney as the wife who has just died of cancer and Antonio Banderas as her one time lover (While the wife was married)
Antonio Banderas pretended he was a rich playboy when in fact he was a janitor of a hotel.
Liam finds out about him after his wife dies and curiosity leads him to Lake Como where he eventually confronts his wifes ex lover.
Fine film with great performances by all..