 In February 1900 Kschessinska met, Grand Duke Andrei Vladimorovich, who was a son of Grand Duke Vladimir Alexandrovich, Sergei’s first cousin.Mathilde fell in love with Andrei and soon they started a new relationship.Grand Duke Sergei tolerated their affair remaining a close and loyal friend to the famous ballerina, but the relationship between the two Grand Dukes was tense.