Julie Parkin, 39, was cut 27 times at her home in Sunderland, in June.
Her significant other, Adam Parkin, conceded her murder and the endeavored murder of a moment casualty, who can’t be named.
The 35-year-old, who additionally conceded three charges of making foul photos of a kid, was imprisoned for life with a base term of 23 years.
Prosecutor Robert Smith QC disclosed to Newcastle Crown Court that the couple had gone for a walk and a drive to talk about what Mrs Parkin had found.
Parkin said he had expected to murder himself yet rather “snapped” and turned the blade on his better half.
She was wounded in the head, neck and chest, and the tip of the cutting edge was left held up in her skull.
Parkin drove himself to the police headquarters in Southwick soon after 12 pm.
Witnesses heard him say: “I require the police, I’ve quite recently murdered my better half,” the court was told.
While in authority, Parkin additionally stated: “She was so dismal when she discovered what I truly am.
“We would part. She stated, ‘don’t execute yourself,’ and I ought to have done that. I ought to have executed myself.
“There’s some kind of problem with me.”
Police found proof of prepping on Parkin’s cell phone and looks for tyke mishandle on his PC.
Mrs Parkin instructed at West Boldon Primary School where she was depicted as “very regarded”.