Justin Timberlake is rumored to have cheated on Jessica Biel. On monday night Justin was partying at New York City hot spot Avenue, where he downed shot after shot of Patron tequila and kissed, held hands with a “an unknown brunette.”

more Justin after the hop…

A spy for Poisen Ivy was on hand and reported:

Timberlake was so limber off Patron shots that he started dancing alone atop his booth (see top photo). He also treated guests (including Lindsay Lohan and Owen Wilson) to a three-minute breakdance in which he rolled around the floor and accidentally crashed into surrounding patrons.

Lindsay Lohan, the media-hugging, gossip hound, sent out a revealing tweet to show her respect for this story saying: “…where’s jb [Jessica Biel] cheater?”