Page "Police Story (1985 film)" Paragraph 5

When Ka-Kui arrives at his apartment with Selina, he is surprised by his girlfriend, May ( Maggie Cheung ) and her friends, who are throwing a birthday party for him, but May becomes angry with Ka-Kui after seeing Selina only wearing lingerie and Ka-Kui's jacket.

Not knowing that May would come back, Ka-Kui tells Selina during the shower about his differences with May hearing in.

Ka-Kui later explains to May that Selina is a witness, but an upset May leaves the scene, though she does go to Tao's trial the next day.