My Wife’s Lover (1992)

aka’s: Tai Tai De Qing Ren/Tai Tai Dik Ching Yan/太太的情人

The story follows the unhappy relationship between Terry (Maria Tung Ling) and Alan (Vincent Wai Lam), two high-powered professionals. Alan is cheating on his wife (a nightly office tryst with a secretary) while the lonely Terry meets and is wonderfully seduced into lesbian lovemaking by the gorgeous photographer Joanne (King-Man Chik). Complications ensue when Alan also becomes romantically involved with Joanne.