Kabby Hui Nga Ting in the new film 'S for sex S for secrets' played a sex addict "third party" and was in bed with the on screen married man Pakho Chau in a hotel for ten hours.
She joked that making a "romantic action film" was just as tiring and damaging as making an action film, reported HKtopten.
Said the actress: "Maybe we were too intense. After work I discovered that my mouth was swollen and bruised, even bleeding. It really was very passionate!"