Simon Cowell's recovery following a severe electric bike accident earlier this year seems to be going full speed ahead - and it's a little too fast for his famous friend Sinitta!Simon's long-time friend, the singer and pop star Sinitta, spent Christmas in Barbados with him and admits the way he's throwing himself back into life so fast is causing her anxiety! Speaking with HELLO! this week, Sinitta says: "I must admit as much as I love seeing him back to his old self and bombing about on a jet