Article continues below advertisementEven though Sarah Ferguson and Andrew Mountbatten-Windsor have remained friends ever since their 1996 divorce, the ex-Duchess of York reportedly felt alone and unsure during her marriage.Ferguson, 66, and the man formerly known as Prince Andrew, 65, married in 1986 and split a decade later. The former flames share daughters Princess Beatrice and Princess Eugenie.Article continues below advertisementThe Former Duchess of York Seemed 'Lonely' and 'Deeply Unhappy'Source: MEGASarah Ferguson and Andrew Mountbatten-Windsor married in 1986 but divorced in 1996.