Aaron Armstrong, 25, who discovered Sophie's body, posted an emotional Instagram tribute to his girlfriend on Monday, following her funeral.
He wrote: '😢 just wish I could cuddle you all day miss you so much man.
'Sophie not a minute goes by with out your gorgeous smile being a picture in my mind everyday we spent together was so amazing I need them days back 😢💔 I love you princess 🌹🌹'
Armstrong was living in Newcastle, but had been staying with his parents in Blyth since Sophie's passing.
In a haunting message, Aaron took to social media last week, writing: 'I will see you very soon angel.'
Many have taken to Twitter to mourn the loss of both Aaron and Sophie.
Our thoughts are with both Sophie and Aaron's family and friends.