Man found guilty of gay love triangle murder

The international gay love triangle which cost a Texan man his life has cost another his freedom, after Qatari man Mohammed Ahmed Almansouri was convicted of murder in a Perth court.

Almansouri, 39, was found guilty by a Supreme Court jury of fatally stabbing love rival Kenny Horack last August.

Mr Horack, from Texas, was stabbed 14 times by Almansouri after tensions surrounding their complicated relationships with shared lover Ben Campbell spilled over into a brutal attack at the home the trio shared in Perth's western suburbs.

After a two-week trial, in which Almansouri claimed self defence and that he'd been bullied by Mr Horack, the jury took less than two hours to convict Almansouri of murder.

He faces a life sentence when he returns to court to be sentenced in February.

After the verdict, Mr Campbell refused to comment, having watched proceedings from the public gallery.

The jury had been given conflicting accounts of what happened on the night of August 4, 2011, when Almansouri and Mr Horack clashed at the Subiaco property.

The prosecution claimed Almansouri had become increasingly jealous of Mr Campbell's long-term relationship after he (Almansouri) had met Mr Horack in Qatar in 2009.

Prosecutor Laura Christian told the court that after returning home, Almansouri had snapped when he realised photos of him and Mr Campbell in the loungeroom had been replaced by some of Mr Horack and Mr Campbell.

In a police interview after the stabbing, Almansouri said he had "got like fire" just before Mr Horack was attacked.

In his defence, Almansouri claimed Mr Horack had bullied him repeatedly during his time with Mr Campbell - being labelled a "houseboy" - and on the night of the stabbing had shouted at him, pushed him, and eventually stabbed Almansouri in the buttocks.

Almansouri said he was defending himself when he inflicted the fatal wounds to Mr Horack.

When police arrived at the house around 7.30pm (WST) they found Mr Horack slumped over and covered in blood with a knife nearby.

Mr Horack suffered 14 stab wounds, three of which were fatal on their own, including wounds to his head, neck, chest, arm, leg and shoulder.

Mr Campbell earlier told the court he lived in Texas with Mr Horack but moved to Qatar for work in August 2007, which was where he met Almansouri via a website in 2009.

He said both partners knew about each other and Mr Horack, who remained in Texas, was sad about his relationship with Almansouri.

Almansouri accompanied Mr Campbell to Texas in April 2011 and stayed at the couple's home in a separate bedroom.