A jealous male model who stabbed his lodger to death after accusing him of kissing his girlfriend has been jailed for a minimum of 17 years.
Carlos Velez, 20, told detectives that he had a mental illness and had seen visions of the devil before he carried out his "vicious and frenzied attack" on March 6 last year.
Colombia-born Velez dreamed of being Britain's next fashion icon while living with lover Ashlly Rondon-Diaz and Spanish chef David Martinez in Leyton, east London.
He flew into a jealous rage when he saw the pair chatting together and repeatedly slashed Mr Martinez with a kitchen knife across his body.
The Spanish victim ran outside and collapsed on the pavement where he bled to death while Velez covered his face and fled to Portsmouth.
He denied murdering the Spaniard, but was found guilty by a jury at the Old Bailey.
Velez pretended to be mad in his police interview and claimed diminished responsibility from mental illness at his trial.
He described 'visions of the devil' which started in his childhood and claimed his memory went blank a day before the killing.
But a psychiatrist said it was 'unlikely' that any mental illness would cause such an amnesia and the jury convicted him of murder after deliberating for three hours.
Judge Anthony Leonard QC said: "You deliberately tried to lie your way out of this, when realised you couldn't get out of it you decided to play madness.
"In the police interview it was clear you were putting on a performance. The doctor in his evidence described it as a crude attempt at fabrication.
"Your visions were likely a result of sleep paralysis, not from a psychiatric disorder.
"You calmly left the building and made your escape with your hood up, you took the knife with you and made your way to Portsmouth where you friend was, told lies and half-truths to those you met down there.
"You are a violent man with hot temper, there was no justification for using a knife on that man.
"You have narcissistic traits which exist in absence of mania and sexual jealousy which explains why you are violent when you feel disrespected.
"I accept that you suffer from anti social personality disorder, your use of skunk cannabis has made your condition worse.
"Your condition is not sufficiently severe to allow me to reduce your minimum sentence."
Judge Leonard accepted that the attack was not premeditated and followed an argument but noted its 'ferocity'.
The court heard Mr Martinez suffered two deep stomach wounds in quick succession, cuts to the legs and arms as he warded off blows.
Following his sentence the 20-year-old admitted punching a prison officer twice during his prison induction at Belmarsh, only ten days after he was remanded.
Velez has a history of violence with a conviction for cutting a chef's throat because he felt 'disrespected' and hitting a man he thought had looked at his girlfriend's bottom.
Victim David Martinez's family said he approached life with 'humour, intelligence and hard work' and had been left distraught and anxious by their loss.
Velez had written Psalm 143 in blood red ink on his ceiling, the court heard.
The inscription from the Bible ends: "My God, teach me your will God. Rescue me Lord, as you have promised, and your goodness save me from my troubles or with your love for me kill my enemies and destroy all my oppressors for I am your servant."
Velez had told jurors:"'When I first met the devil it was only a few times in one year, maybe 10 times, when I was about five, then after that I think I was about eight.
"Then after that it happened when I was 13 then 16 and then it happened on 5 March."
Velez's mental deterioration during his childhood was ignored by his parents, said his barrister Charlie Sherrard.
He will also suffer a tougher regime in prison because he punched a guard over not getting food during his induction to Belmarsh.
The barrister said: "Carlos Velez is a very young man and a very young man in more than one sense.
"He has been very badly served in life so far."
Ms Rondon-Diaz heard screams from the bedroom and rushed downstairs to find Velez standing repeatedly knifing Mr Martinez-Valencia in the 'truly dreadful attack,' the court heard.
During the trial the heartbroken 20-year-old winced as she relived the moment she saw Velez 'giving it' to Mr Martinez with one of his mother's kitchen knives.
"He was angry and I was going to hug him and he asked me what I was doing in the kitchen with David,' Ms Rondon-Diaz wept.
"I said I wasn't doing anything but he was insisting that I had been doing something with David in the kitchen because he saw that I was very happy and he thought that I had just kissed him.
"We went back to my room and carried on talking. I said I hadn't done anything and he hit me in the face but it wasn't hard, it didn't hurt me. It was with the palm of his hand.
"David said "no, why would I do that?" and David just laughed and then David went back to his room. He just said no and laughed and closed his door."
Dr Frank Farnham said Velez had not experienced psychosis as 'severe' as schizophrenia and seemed able to understand the nature of his conduct.
The psychiatrist said: "I think narcissistic daydreaming was referred to in the report and it's possible this tipped over into a psychotic experience."
Velez, of Leyton, claimed diminished responsibility but was convicted of murder and sentenced to life in prison with a minimum tariff of 17 years.
