Scarlett JohanssonOk, time for a u-turn: forget Jessica Biel, it looks like things are back on between Justin Timberlake and Scarlett Johansson.

Scarlett and Justin were both spotted out and about in Miami for the Super Bowl last weekend and an inside source told In Touch Weekly: “Justin and Scarlett are totally back on. They spent the whole weekend together.”

The pair were spotted together at the celebrity-packed Mokai nightclub on Sunday night after the game and an onlooker at the club told the magazine: “They were dancing and whispering in each other’s ears. They were having a really good time together.”

The couple partied with Justin’s former NSync bandmate Joey Fatone and other celebrities such as Kevin Federline, Jeremy Piven, Nicky Hilton and Tara Reid then left the club together, hand-in-hand, around 3am to head back to Justin’s bungalow at the Delano hotel.

A second source told the New York Post’s Page Six: “As they left through the back [of the club], Justin was leaning against the wall and Scarlett came up, leaned into him and did a sexy, little dance, grinding into his body.”

Scarlett’s spokesperson refused to comment on the rumours saying: “I don’t comment on my client’s personal life.”