Taxi driver Tony Lightburn, 35, was found lying next to girlfriend Rachel Wiszniewska, 36, last Saturday morning.
Cops are not treating their deaths as suspicious.
Pals lined up to pay tribute to "lovely" Rachel and "big character" Tony.
Hayley Murray, who went to school with Tony, said: "They hadn't been together very long but she seemed like a lovely girl and they both seemed really really happy together.
"He was as daft as a brush, he was a little tinker, but me and him were always the ones that stuck-up for one another.
"I only met Rachel once but she seemed lovely."
A Northumbria Police spokeswoman said: "At 9.43am on Saturday we received a report of concern for welfare for two people.
"Police and emergency services attended the address where they found an unresponsive male and female.
"The 35-year-old man and the 36-year-old woman were pronounced dead at the scene.
"Their families are being supported by specially-trained officers at this difficult time.
"There is not believed to be any third party involvement. A report has been prepared for the coroner."
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