A spokesperson for Northumbria Police said: "At around 12.20pm today police received a report from the ambulance service that a 25-year-old man had been found deceased at a property on Furnace Road in Bebside, Blyth.
"There is not believed to be any third party involvement and a report will now be prepared for the coroner."
At the time of Gradon's death, Aaron said: "I will never forget that smile I love you so so much baby your my world forever ever and always.'
Sophie's death, thought to be a suicide, garnered hundreds of tributes before she was laid to rest in her native Newcastle on Friday. Friends, family and boyfriend Aaron gathered to say goodbye to "beautiful Sophie".
Devastated friends took to social media to pay tribute to Aaron today after news of his death spread online.
Michael McCready posted on Facebook: "Very sad day today to find out, that Aaron Armstrong has passed away. RIP pal. You're now with Sophie, sending my love and thoughts to all family and friends at this hard time."
️Jill Sayer posted on Facebook: "Omg I'm in total shock.... rip Aaron Armstrong reunited in the sky".
Caitlin Peachey posted on Twitter: "Can't even begin to imagine what Sophie gradon and Aaron Armstrong's families must be going trough. 2 deaths on two week RIP Aaron."
Jessica Hayley-Marie posted on Twitter: "Absolutely heartbreaking news about Aaron Armstrong. I hope you & @sophiegradon are somewhere living it up together once again RIP".
Kay posted on Twitter: "Wow..RIP Aaron Armstrong I hope you and Sophie fly high together so so sad to hear this".
The inquest into Sophie's death was opened on June 27 during a very short hearing at North Tyneside Coroners Court on June 27.
At the hearing, which lasted less than a minute, the case was adjourned.
It is believed Sophie, who appeared on ITV's reality TV show Love Island in 2016 and also worked as a model, had been struggling with mental health problems in the run up to her death.
During the hearing Trever Carroll, Assistant Coroner for South Northumberland, said: "Following initial inquiries it is appropriate to open an inquest into her death. (I will) adjourn at this stage for further inquiries to determine cause of death."
None of Sophie's friends or family was present at the hearing.
Where to get help:
• Lifeline: 0800 543 354 (available 24/7)
• Suicide Crisis Helpline: 0508 828 865 (0508 TAUTOKO) (available 24/7)
• Youthline: 0800 376 633
• Kidsline: 0800 543 754 (available 24/7)
• Whatsup: 0800 942 8787 (1pm to 11pm)
• Depression helpline: 0800 111 757 (available 24/7)
• Rainbow Youth: (09) 376 4155
• Samaritans 0800 726 666
• If it is an emergency and you feel like you or someone else is at risk, call 111.
