A friend of a man accused of murdering his New Zealand girlfriend in a jealous rage has told a court he was obsessed with her and boasted that she was lucky to have him.
Jasmin Snook told a jury at Winchester Crown Court on Friday that she had also heard Elliot Turner threaten to kill 17-year-old aspiring model Emily Longley in the days before the prosecution allege he strangled her in his bedroom in Bournemouth, Dorset, on May 7 last year.
Miss Snook said Emily had told her five days before she died that she did not want to be with jewellery shop worker Turner, but she wanted to be friends with him.
Miss Snook was told by Turner, who denies murder, that he had looked at Emily's Facebook profile and had seen she was contacting other men.
"He (Turner) was saying that she was lucky to be with him and he didn't understand why she was doing things like this; she made him look like an idiot.
"He was obsessive. He was constantly talking about her."
She told the court Turner, 20, had found out Emily was meeting another man at a nightclub and had tried to find out who she was with.
"He said he was going to smash her f****** face in: that he didn't care if he did 10 years - she was going down. She was dead - things like that," Miss Snook, 19, said.
She said Turner had put a hammer in his waistband and gone to a nightclub looking for Emily and later texted Miss Snook asking to meet.
"He was near tears. He was acting weird. He said: 'She's dead.' He started crying hysterically.
"He said: 'I killed her, I smashed her on the head seven times with a mallet. I heard her skull crunch.'"
Turner said he had dumped her body in the bushes close to the nightclub before he started laughing and said he was joking.
Miss Snook said Turner told her he needed one last night with her. He said he could get anyone he wanted and Emily needed to realise that.
Turner claims Emily attacked him and he defended himself and found her dead in his bed in the morning.
The prosecution allege he strangled Emily and that he was a violent and jealous boyfriend, fearful she was being unfaithful.
Turner's parents, Leigh Turner, 54, and Anita Turner, 51, are accused of covering up for their son by destroying evidence and taking items away from the scene of the death. They both deny perverting the course of justice.
Emily had been born in Britain but her family had emigrated to Auckland when she was nine.