Simon Cowell has found 'the one' in Lauren Silverman, according to his friend Sinitta.

The 'X Factor' mogul's former girlfriend and close pal claims he is incredibly ''happy'' in his new relationship with pregnant Lauren - who is expecting his first child - and is very ''relaxed'' about the impending changes in his life.

Quizzed if the New York socialite may be 'the one' for Simon, Sinitta said: ''Yeah, I do. He does seem very happy and they get along incredibly well. She absolutely adores him.

''I see him very happy, very relaxed ... it's very different and surreal, but he does seem happy and a bit surprised. I don't think he was expecting his life to go in that direction.''

Simon, 53, is known for having great relationships with his former lovers and regularly holidays with a harem of former flames, including Sinitta, Jackie St.Claire and Terri Seymour, but these luxury vacations may be a thing of the past once Lauren gives birth, according to 'So Macho' singer Sinitta.

Sinitta, 49, added to UK TV show 'This Morning': ''It might change if it is what Lauren wants. I think Simon's quite a creature of habit, he has his traditions, and maybe we'll continue. But he has his own partner and his child with him as well. I could imagine in his mind he'll be thinking, 'We just have a bigger family now.' ''