AceShowbiz -

Despite their longtime relationship, it turned out that Brad Pitt still hides something from Angelina Jolie. According to Life & Style's Scene Queen, the "Inglourious Basterds" actor still secretly smokes behind Jolie's back.

"Smoking cigarettes is something Brad has done for many, many years and he smoked when he was married to Jennifer Aniston," an insider close to Pitt told the site. "It is one of the very few things he still does once in a while that he once did with his ex-wife."

Jolie, however, was said a bit understanding about Pitt's smoking habit although the "Lara Croft Tomb Raider: The Cradle of Life" actress insists to keep it under their children's radar. An insider said, "Angie allows the smoking as long as it really doesn't affect her or the kids, but she doesn't love it. Brad never smokes around the children and keeps it far away from his family, but it's a habit he still enjoys occasionally."

Pitt himself once admitted that he is scared if Jolie, who thought he has quit smoking, will catch him doing it. During a past interview with Entertainment Weekly, the "Moneyball" actor admitted, "Actually, I'm less worried about the paparazzi catching me than someone, ahem, who doesn't know I still smoke once in awhile."

Brad Pitt and Angelina Jolie began involved romantically after they starred together in 2005 film"Mr and Mrs Smith". Pitt was at that time still married to Jennifer Aniston who later filed for divorce in the same year. Jolie confirmed her romance with Pitt when she, in January the following year, announced that she was pregnant with Brad's kid.