HUNTA-897 The adult son is excited about his father's newlywed wife

My father has passed away and I live with my mother-in-law, but my life is still very difficult. I have fallen in love with her mother-in-law, and her mother-in-law has directed her insatiable desires towards me solely for sex, just the two of us. I know that this is the most immoral behavior, but I can't stop. And the foreplay can be considered an additional sin. Including wild parties with friends. Is it permissible to drown in sex to fill the voids in each other's hearts day by day?