Simon Cowell is moving on from Terri Seymour with ex girlfriend Sinitta, according to UK reports.

The X Factor Judge and former pop star – who dated 18 years ago – have sparked rumours of a possible on-again relationship after Simon split with Terry.

A source tells the Daily Mail, “Sinitta has always helped put a smile back on Simon's face. She's become the closest person to him.

“Simon insists they're just good friends. He prides himself on staying friends with exes.”

According to Simon's mum his relationship with the 34-year-old presenter wasn't working because they both wanted different things.

“I’m very fond of Terri, I adore her. The split was really based on the fact that she wanted a baby and to get married,” says Julie Cowell.