Former couple will start shooting Bad Teacher later this month
The former couple have signed up to take the lead roles in comedy Bad Teacher.
Cameron, 37,will star as a high school teacher who sets out to seduce a substitute tutor, played by Justin.
Shooting begins later this month and Jake Kasdan will direct, reports E! Online.
Justin, 29,and Cameron – who also starred in Shrek The Third together – split in January 2007 after 4 years of dating.
He is now in a relationship with Jessica Biel, 28.
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