Justin Timberlake Cameron Diaz Sex Scene “Bad Teacher”

Yep, Jessica Biel might want to skip BF Justin Timberlake’s next movie, because the flick features an “awkward sex scene” between the pop crooner and his former flame, actress Cameron Diaz.

The pop star and actor started dating JB shortly after ending his romance with Diaz in 2007. The former lovers have stayed friends – and now they’re going to be co-stars in the upcoming comedy Bad Teacher.

The Jake Kasdan-directed comedy sees Diaz as a foul-mouthed, gold-digging middle school teacher who gets dumped by her boyfriend. She then develops a crush on school’s model substitute teacher (Timberlake), but runs into some competition for his affection. Jason Segel suits up as a gym teacher.

Filming begins in Los Angeles later this month.

Life & Style Magazine has obtained an advanced copy of the movie’s script — which reveals a steamy scene that unfolds when the two exes’ characters find themselves alone in a hotel room. According to the tabloid, Justin’s character begins “dry humping” Cameron and he gets “way too excited way too soon.”