Simon Cowell has been having a very sociable week. On Tuesday, Wednesday and Thursday he held court at Ascot races, in a £20,000-a-day private box, buying some of his many friends champagne. Amanda Holden went one day, as did Gary Lineker's stunning wife Danielle.
His mum Julie came on Ladies' Day. And his two great friends and old flames Sinitta and Jackie St Clair were at his side on all three days, beautifully turned out with feathered fascinators a-wobbling and make-up immaculate.
Both women, with their neat figures and dark complexions, put you in mind of another woman altogether - Cowell's fiancée, make-up artist Mezhgan Hussainy.
All the stranger, therefore, that Mezhgan - known as Mish or Mishy - was nowhere to be seen during Cowell's Ascot gatherings. Nor was she at Cowell's side on the 'happiest day of his life' when he accepted a lifetime achievement award from Bafta two weeks ago - he took St Clair instead.
For that matter, she wasn't around for any of the Britain's Got Talent semi-finals, finals or at the after-party. On these occasions, it was Sinitta who was his female companion.
Stranger still, sources in America say that Mezhgan didn't even attend the after-party for the finale of American Idol this year - the show on which she works - and where he was making his last appearance as a judge.
She also did not accompany him back to the UK afterwards - that honour went to Sinitta again, the pop singer who dated him on and off for nearly 20 years and remains probably his best friend in the world.
Read more: The ex-factor: She was supposed to be 'The One' but Simon Cowell's fiancee hasn't been seen with him since May | Mail Online