"It's a break at the moment. The problem with Simon is that he works so hard. She's gone to America which, in a way, is a good thing because of Simon's work. At the moment it isn't a good idea for her to be here. She doesn't know many people in London," the Daily Express quoted Julie as telling the Mail.
"If you are Simon's girlfriend, let's be honest about this, you are not going to see very much of him. It's very difficult for a girl to accept that. He doesn't want anyone sitting in his dressing room when he's working. Sometimes these girls want to be there too much.
"They are on good terms and I'm sure are in regular contact. Simon remains friends with all his ex-girlfriends. I think (the engagement) was too quick. This might give them the break they need to think it through. Marriage is a very, very big step," Julie added.
A representative for Cowell insists the couple is 'very much together' and reveals Hussainy is due to visit the TV star in the U.K. within the next week.