All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
It is unlawful to state as a precondition (in the marriage contract) that a man should divorce his wife before you accept him as your husband. The evidence for this is the Hadeeth reported by Al-Bukhari that the Prophet said: “No woman should ask for the divorce of her sister [i.e. other Muslim wife of her husband] so as to take her place, but she should marry the man (without compelling him to divorce his other wife), for she will have nothing but what Allah has written for her.”
Similarly, it is unlawful for the husband to tell lies to his wife or to anyone else. He should not say something that contradicts the reality as doing so is a form of cheating and deceiving people which are forbidden in the Sharee’ah. In fact, both spouses should respect each other; fulfill each other's rights according to the marriage contract that imposes duties on both spouses. Allah Says (what means): {O you who have believed, fulfill [all] contracts.} [Quran 5:1]
One of the most important requirements of marriage is the fact that the woman lets her husband enjoy her and that the husband spends on his wife. Both spouses should also be good towards each other in speech and deeds. So, if one of them falls short of fulfilling the partner's rights, then he/she commits a sin. So, he/she should repent to Allah as soon as possible because death can be sudden and then repentance will no longer be possible.
On the other hand, we advise this wife to deal kindly with her husband and be patient with him. She should exhort him. If that does not have any effect, she may seek the help of some pious people who should try to solve the differences and come to a solution that is accepted by both spouses.
Allah Says (what means): {…after that, either you retain her on reasonable terms or release her with kindness…} [Quran 2: 229]
Know, dear sister, that you are not a loser as long as your aim is pleasing Allah. In fact, the loser is the person who abuses of his religion no matter how wealthy he is and how comfortable he may seem to be in this life. We ask Allah to help you persevere on that which pleases Him.
Allah knows best.