Clandestine Affair summary:

Two female leads hidden away in a vast estate, who save each other through their roller coaster of a relationship! Bai Yuetao, wife of a rich businessman, blames herself for her husband's skirt-chasing tendencies. After spending another night alone in their lavish residence, she sees a graceful woman appear on the newly bought raree show. This woman calls herself "Butterfly Dream" and says that she can teach Bai Yuetao how to "hook" her husband's heart. But the price she demands? Bai Yuetao's body.