What is the ruling on thinking about and imagining sexual pleasure with one's brother's wife? Is it obligatory to leave a place where she is present? And what is the ruling on excessively demanding sexual intercourse from one's wife?

The problem began with being lenient towards devilish whispers. The solution lies in sincere repentance and supplication, feeling the fear of Allah and a bad ending, not accepting for others what you would not accept for yourself, and being upright in dealing with foreign women. To alleviate the intensity of desire, it is recommended to fast, avoid provocations, and occupy oneself with what is beneficial. It may also be permissible to consult specialists for medication if necessary.