A man whose girlfriend was found stabbed to death at his home has been found guilty of her murder.
Sammy-Lee Lodwig, 22, was found with cuts to her throat and forehead and wounds to her chest at Jason Farrell's flat on Carlton Terrace in Swansea on 23 April.
The 49-year-old, who said he could not remember killing her, had admitted manslaughter but denied murder.
He told Swansea Crown Court he had been "confused" after taking drugs.
Farrell, who had also dated his victim's mother Sarah, was also convicted of causing grievous bodily harm with intent to a man called Christopher Maher.
The jury was told he had suspected Mr Maher of being Sarah Lodwig's new lover, before attacking him in the street.
At the opening of the trial, prosecutor Mike Jones QC had read from what he described as a "chilling" letter written by Farrell after his arrest.
It said he and Ms Lodwig had argued at his flat on 23 April.
"Then the next thing I had her tied up and told her I'd had enough and I was going to kill her," Mr Farrell wrote, adding: "I did by repeatedly stabbing her in the face and throat."
Mr Jones also told the court Farrell had knocked on a neighbour's window on the night of her death and said: "I killed her."
The neighbour told a friend, who accompanied Farrell to his flat and saw the body of Ms Lodwig on a bed, the jury heard.
In court it was estimated Ms Lodwig died 20 to 30 minutes before emergency services arrived.
A black-handled kitchen knife covered in blood, with the tip of its 6in (15cm) blade missing, was found next to the bed.
The court was told Farrell had a string of convictions dating back to 1988 for crimes including wounding, possession of offensive weapons and supplying drugs.
He was remanded in custody and will be sentenced on Friday.
Speaking after the verdict, Alex Scott from the Crown Prosecution Service said: "This was a tragic case of premeditated violence, where Farrell's brutal actions resulted in the death of this young woman.
"Nothing can ever change what happened, but her family now know her killer has been brought to justice."