London, Nov 2 : British race ace Jenson Button has pledged to retain his Formula 1 world crown so that he can live up to the promise of marring his Japanese girlfriend.

The 29-year-old Button has plans to tie the knot with the 25-year-old Jessica Michibata but he wants to win the world title once again before he enters marital life.

“Bring it on. I’m really looking forward to showing what I and the car can do and that we are worthy world champions,” the Daily Star quoted Button, as saying.

The World champ added: “If I win again next year, I’ll propose then.” (ANI)