IT looks like it's over between Derek Jeter and Jessica Biel. Last weekend, Biel flirted with Justin Timberlake while Jeter was at Atlantis in the Bahamas for the Michael Jordan Golf Tournament, where Biel seemed to be the last thing on his mind. Saturday night, Jeter was "flirting madly" with Gabrielle Union , our source said. When DJ Cassidy played "Put It in Your Mouth" by Akinyle, Jeter and Union dirty-danced before leaving together. A rep for Union said, "They are friends, but they did not hook up."