Are Cameron Diaz and Justin Timberlake's relationship on the rocks?

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. . . . . .Full Story