An alleged murder victim's relationship with the young mother charged with killing him began when he raped her as a schoolgirl, a jury was told yesterday. Giving evidence at her trial, a tearful Yik Po-man, 20, told of stormy years with Cheung Wai-man, 22, who she said used to assault her. 'When he did not fly into a temper he was not bad. However, when he did, he went crazy,' Yik told the Court of First Instance. She also told how the rape led to the birth of a baby girl and described her double life as a schoolgirl mother. Yik denies murdering Cheung on or about February 10 last year at their home in Tai Hing Estate, Tuen Mun. She said she first met Cheung in March or April 1994 when she went to a karaoke lounge in Tuen Mun to see a school friend who worked there. 'On one occasion I went to his home to wait for other people to join us, he bothered me . . . he raped me,' Yik said. It was not until November or December 1994 that she realised she was pregnant, Yik told the court. According to Yik, Cheung did not want the baby but it was too late for an abortion. The Form Four student continued to go to school as usual and no one - including her parents or teachers - realised she was pregnant. She gave birth in the toilet of Cheung's home in May 1995. Yik said she left the baby at Cheung's flat while she stayed with her mother and younger sister in another estate in Tuen Mun. She moved to his home when the baby was about six months old. Her life with Cheung was punctuated with 'regular' assaults. The tension built up on the morning of February 10 last year when a 'fierce' Cheung returned home, the court heard. 'He did not say a word. He dashed towards me and hit me,' Yik said. She said she grabbed a fruit knife and stabbed him as their daughter, now four, looked on. The fight ended when 'he fell down, closed his eyes and did not move again', Yik said. The trial, before Madam Justice Clare-Marie Beeson, continues.