Louis XV eventually became a notorious womaniser. In 1733, he entered into his first infidelity, with Louise Julie de Mailly; until 1737, this relationship was not official, and she was known at court as the "Fair Unknown". These years, Marie unsuccessfully tried to find out who the mistress was and did display her displeasure over the state of affairs, but the adultery had the support of Cardinal Fleury, because de Mailly was not interested in politics, and after the first years of the king's adultery, Marie became resigned to it.