Jessica Simpson�s ex-husband Nick Lachey has joyously announced he�s fallen in love again with new girlfriend Vanessa Minnillo.

Lachey, who divorced Simpson earlier this year, told the crowd at an MTV concert in Las Vegas last week, �Damn it, Las Vegas, I fell in love again!"

The happy couple � who have been dating for seven months � went off and celebrated their shared birthday after the concert.

Simpson had been said to be furious about the pair's relationship, as she had been a close friend of Minnillo.