Jessica Simpson has fuelled speculation she's back in the arms of comedian DANE COOK after joining him at Prince's VIP concert at Los Angeles' Roosevelt Hotel on Saturday (30Jun07). The couple reportedly dated while shooting the movie Employee Of The Month together - and guests at Prince's latest show were left in no doubt the pair are still close. According to witnesses, Simpson and Cook sat next to each other on a sofa, often talking into each other's ear over the music. A source tells Life + Style magazine, "They were laughing, joking and hanging out. They practically spent all night together, dancing and touching each other." Simpson has recently been dating bluesman John Mayer, but their romance has reportedly ended.