Jack Frew murder accused Craig Roy 'felt threatened' by him
The man accused of murdering Jack Frew told a psychiatrist that he "felt sexually and physically threatened" by the schoolboy, a court has heard.
Dr Paul Gilluley told the High Court in Glasgow he interviewed Craig Roy for five hours last August.
He said Mr Roy told him he took a knife with him as "back up" when he went to meet the schoolboy.
Mr Roy, 19, admits fatally stabbing 16-year-old Jack Frew in woods in East Kilbride in May 2010 but denies murder.
The court heard that Dr Gilluley is a consultant psychiatrist with West London Mental Health Trust and also works with the Home Office.
'Dirty and guilty'
Giving evidence, Dr Gilluley told defence QC David Burns that Mr Roy said that Mr Frew made him "feel dirty and guilty".
Mr Roy said that he had oral sex twice with Mr Frew who had threatened to tell his lover Christopher Hannah.
On 6 May 2010 Mr Frew sent a suggestive sexual text to Mr Roy.
Dr Gilluley said: "Mr Roy felt sexually and physically threatened by Mr Frew.
"After the text he said he felt extremely angry with Mr Frew and said he had 'pushed it too far, had pushed it in my face'.
"He said he had to confront the issue as it had gone too far. He said he was in a rage. He said he decided he would take a knife with him.
"He said that before when he challenged Mr Frew he had laughed at him. He said he'd wanted to feel in control, powerful.
"He said - 'I only wanted to use it (the knife) for back up'."
Dr Gilluley said that Mr Roy told him he had no intention of harming Mr Frew and added that as they walked along Mr Frew had touched him on the bottom and he took this to mean he wanted to have sex with him.
The psychiatrist added: "Mr Roy said he took the knife from his pocket and said after that he had little memory.
"His next memory was off trying to help Mr Frew and then telephoning Mr Hannah. He said he was covered in blood and described the smell of blood as metallicy."
Dr Gilluley told the jury that in his opinion Mr Roy was suffering from an emotionally unstable personality disorder of borderline tendencies.
He added: "Mr Roy has symptoms consistent with borderline personality disorder. Due to his age it's not possible to say the symptoms are enduring."
Dr Gilluley described Mr Roy as suffering from low self-esteem and described his relationship with Mr Hannah as "intense and unstable".
He added: "Mr Roy idolises Mr Hannah. I became unclear whether he wanted to be with Mr Hannah or wanted to be Mr Hannah.
"He described him as the most popular boy in East Kilbride and said he had a fan club."
Under cross examination by advocate depute Jennifer Bain, prosecuting, Dr Gilluley was asked: "Could it not be an indication of planning that he decided to take a knife?" and he replied: "Yes."
Ms Bain then asked: "Might it not be this incident is not as a result of loss of control but as a result of him attacking someone in anger," and he replied: "That's not his account."
The trial before Lord Doherty continues.