“Usually Justin is pretty in control, but he was acting pretty crazy," the New York Post quoted the source as saying. “He was drinking tequila all night. At one point, he cleared out a little space and started break dancing. He was bumping into people and spilling drinks. It was hilarious," the source added.
The spy further revealed that Lohan—currently off with on-again, off-again girlfriend Samantha Ronson—wanted to dance with the singer, but "he shooed her away." However, Timberlake later cosied up to an unidentified brunette partygoer, according to the source. "It definitely wasn''t Jessica (Biel, his girlfriend)," said the source.
Later that night, a thinly veiled message appeared on Lohan"s Twitter account, reading: "Where''s jb cheater." The message seemingly referred to Biel. The next day, another message on Lohan"s Twitter page read: "Why do people cheat?"
However, the actress later claimed that both messages had been posted by someone who''d hacked into her Twitter account. A representative for Timberlake refused to comment.