Are Cameron Diaz and Justin Timberlake on the Quits?

Are Cameron Diaz and Justin Timberlake on the rocks? The two reportedly had a nasty public spat at an L.A. club earlier this month because of Timberlake's roving eye, which ended up with Diaz in tears.

The couple's fight was caused by Justin's flirtatious behavior toward a 'curvy blonde' who had been at the stars' banquette at L.A.'s Spider Club on Aug. 5, according to the upcoming issue of In Touch Weekly. 'The argument got so nasty that Cameron, 32, and Justin, 24, ended up leaving in separate cars,' according to the mag.

A rep for Timberlake denies the incident, though some are saying that the couple's relationship seems shaky. A few days after the alleged spat, Timberlake was supposedly spotted partying with the Black Eyed Peas at club I-Candy. | source: MSNBC.com