The parents of Catherine Wells-Burr slammed her killer boyfriend yesterday dubbing him "devious, callous and sickening" after they took him in as a son.
Jayne Wells-Burr, 46, and ex-husband Philip, 48, allowed devastated Rafal Nowak to spend the night in their home hours after he was released by police following the discovery of Catherine's body.
But to their horror, just 24 hours later, the man "who became a son" was charged with their daughter's brutal murder.
Yesterday Jayne said Nowak had betrayed the whole family. She described him as "scum".
"When they released him I kept asking police, are you sure he is just a witness, they said 'yes', he was just a witness.
"On hearing that my thoughts were that if Catherine loved him so much, and he was part of our family, then he should return.
"He spent the evening with us. I think Anna and Rafal are both devious, callous, sickening people. They should never be allowed out in society again. They can never be corrected inside prison, they are just too evil."
Philip added: "We took him in. He became a son and he betrayed us all.
"That evening there was no emotion at all, he never spoke about Catherine whatsoever, not a word. There were no tears, nothing."
The Wells-Burr family first met Nowak in 2010 when he began dating Catherine after meeting her on the production line at the Numatic International factory in Chard, Somerset.
Catherine and Nowak continued their relationship until after her graduation from Bath Spa University, when the couple moved in together.
She later became a business analyst for the factory where Nowak, Jayne and Philip and sister Leanne also worked.
The pair appeared to have a perfect relationship, where they "always seemed to be very happy", but secretly Nowak was having an affair with past-girlfriend Anna Lagowinowicz.
Philip said: "They always seemed to be happy, they would do everything together.
"They were always calling each other up every day, in work hours as well, he would find time to cook meals for her, dinners and that."
"They were always very happy, always used to call each other 'darling' and 'gorgeous'," Jayne added.
An intense relationship developed between Catherine and Nowak and the smitten graduate often spoke of marriage and children with the Polish national.
But despite the comments, Jayne maintained Catherine would have broken up with Nowak eventually.
She said: "I wouldn't have said he was the one. I think Catherine would have out-grown him.
"She was very career-minded, and I think she probably would have had a good job, probably not with him."
Only months after the seemingly happy pair bought a house, Catherine was dead, having been smothered by Nowak as she slept, and then burnt in her car by Lagwinowicz and her uncle Dmytryszyn.
