Formula 1 champ LEWIS HAMILTON has dumped his Pussycat Doll lover NICOLE SCHERZINGER over her demands for marriage and children.

Sources say Nicole is devastated by the split because she was sure she would marry the driving ace.

But 24-year-old Lewis thinks he is too young to settle down with 31-year-old Nicole, and demanded a pit stop after almost two years together.

An insider told the Sunday Mirror: "Lewis was adamant the relationship had come to an end.

"He was feeling under pressure to take their union to the next level and he wasn't wanting to become engaged, get married or think about having children.

"He's young, they spend an awful lot of time apart and he's just not ready to leave his youth behind for a lifetime with Nicole.

"He found the tribulations of having a long-distance relationship very challenging indeed.

"Nicole's mortified - she imagined being with Lewis for a long time and she's shocked that things have ended so suddenly."

Since the break up Nicole has pulled out of her stint as host of the Singapore Grand Prix party.