Sinitta: I wasn't sure if Simon Cowell's engagement to Mezhgan was true or not
Make-up artist Mezhgan, 37, is holed up at Simon's £4 million Beverly Hills mansion, while he is busy on The X Factor in the UK.
'Simon and Mezghan are spending a lot of time apart,' says Sinitta, 42.
'They miss each other but they're both professional people and so many relationships are transatlantic like this now.'
Rumours continue to circulate that 51-year-old Simon has cold feet about marrying Mezhgan after he proposed earlier this year. And Sinitta says the engagement was a surprise to everyone.
'I wasn't even sure if it was true or not myself,' she recalls. 'It goes to show when he does want privacy he knows how to get it.'