Is a husband who changes his behavior, lies, and claims he is not married to another woman, while evidence indicates the contrary, considered unjust to his wife who suffers from distress and confusion, or is the wife the one who is unjust?

May Allah bless your diligence in performing acts of obedience; continue with them. Do not pay attention to messages that tell you your husband has married or befriended another woman; they might aim to cause discord between you. If his marriage is confirmed, it is permissible by religious law, and he must be just between you both in terms of overnight stays and financial support. You have done well in attending to his affairs, and it is not permissible for you to refuse intimacy with him except for a valid religious excuse. If his illicit relationship with a foreign woman is confirmed, advise him kindly. If he repents, then praise be to Allah. Otherwise, you may seek a divorce.