A British man accused of the murder of New Zealander Emily Longley said has told a court he did not strangle her and only defended himself after she repeatedly attacked him.
Elliot Turner, 20, denies the charge of murder at his trial at Winchester Crown Court in Hampshire.
Miss Longley, 17, was found dead in his bed on 7 May 2011 at the house he shared with his parents in Bournemouth.
Mr Turner said that an argument in his bedroom turned violent and he was forced to grab Ms Longley by the throat to stop her assaults.
Giving evidence for the second day, Mr Turner admitted he had threatened the 17-year-old and that he felt "upset and deceived" on the night before she died when he saw untrue emails on her phone saying he had smashed her face into a table.
He denied he had used his arm to strangle her in a "sleeper hold" or that he put a pillow over the student's face.
Ms Longley was born in Britain but her family emigrated to Auckland, New Zealand, when she was nine.
She had returned to live with her grandparents in Bournemouth, Dorset, to study, when she died.