The video has appeared after NW magazine reported the pair went to Canada to tie the knot away from the media.
'When Stu said they should get married it was totally on a whim, but it made sense,' revealed an insider.
'He knows that he and Soph belong together, and so does Soph - because she said yes!'
'They realised that if they did it during the party season, it could probably be passed off as just another wild get-together, which is kind of what they want anyway,' explained a friend to the magazine.