AceShowbiz - Margot Robbie's husband Tom Ackerley is reportedly jealous of his wife's co-star Brad Pitt. Rumor has it, the 54-year-old actor has a crush on the "Suicide Squad" actress. Both actors are currently filming Quentin Tarantino's upcoming movie "Once Upon a Time in Hollywood" and Tom allegedly is "keeping a close eye" on Brad by joining his wife on the film set.

"He hopes his presence sends a powerful message: steer clear of Margot!" the source told Life and Style magazine (via HollywoodLife.com). "Tom doesn't want them socializing offset and he's told Margot that he won't stand for it."

Another insider previously revealed that the "Inglourious Basterds" star is smitten with the "I, Tonya" actress. "Tom has reason to be worried," the insider told Radar Online. "Brad is very taken with Margot, and their chemistry is the talk of the cast."

"They get along very well, and Brad's super excited to be working with her, more than he's been in years with a leading lady," the insider added. "This has to be hard for Tom, who's a trusting guy but anyone in his position would find it tough."

According to another source, Brad has had a crush on Margot for years even when he was still married to Angelina Jolie. "Brad has had his eye on Margot for years. He jumped at the chance to squeeze her into the role she has in 'The Big Short' so that he could spend time with her," the source stated.

"[He's] tried to woo her for numerous movie projects. This was a sore subject with Angie who blocked them from working together a few times," the source continued. "Now he's single again you can expect Brad to go after Margot with a passion."