"The Don’t singer accepted the 19-year-old’s proposal when they met backstage at his gig in Glasgow on Thursday, two weeks after losing her sight.

Katie, from Bearsden, near Glasgow, also presented the singer with a painting she did of a Lego house and he signed a copy she’d made for herself.

‘Dear Katie, lovely to finally meet my wife,’ he wrote.

Katie’s mum Trish said: ‘Katie took the picture of the Lego house she’d made and gave Ed a ring with an infinity symbol. Ed loved her artwork and asked if he could keep it for his wall.

‘When she presented the ring he smiled and said, “I suppose I should say yes. OK.”

‘He made it really special for her and she’s since said she needs to think about bridesmaids,’ she added.

Katie said: ‘We haven’t set the date yet, but it’s not official because we haven’t been in a church.’

Katie overcame brain cancer in 2006 but three years ago the cancer returned to her spine."