Jane Pountney, the woman Katie Price claims husband Kieran Hayler has been having an affair with for seven months, was the maid-of-honour at their wedding.
Katie had obviously selected Jane, 50, to play bridesmaid because she was someone she knew and trusted - they had been friends since Katie was 15-years-old.
But it seems as if that trust was misplaced as, today, Katie has shockingly alleged that husband Kieran has been having an affair with married Jane - who has two children - for almost a year.
Jane first appears at the 1:06 second mark in Katie and Kieran's touching wedding video compilation - a collection of the pair's candid wedding pictures.
The expectant mum, who provides the soundtrack to the video, posted it on her official YouTube account.
Jane, wearing a deep purple dress and her brunette hair loose around her shoulders, smiles as she watches Katie kiss a friend at the wedding, which took place on 16th January 2013.
She is then pictured again at the 2:20 mark standing in front of an idyllic Bahamas backdrop with Katie, Kieran and other close family, including Katie's mother Amy.
Katie made the shock announcement of the alleged affair on Twitter: "Sorry to say me and Kieran are divorcing.
"Him and my best friend Jane Pountney been having a full blown sexual affair for 7 months."
Best friend Jane is yet to speak out over the affair accusations.
Katie was previously married to Peter Andre from 2005 until 2009, and Alex Reid from 2010 to 2011.