According to reports, Hammer will play Clyde Tolson, the Associate Director of the FBI, which was founded by Hoover in 1935. Although it's never been proven, many have speculated that the two men were romantically involved.
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Unfortunately, sources have claimed that the two will not be consumating their love - at least on screen.
They reveal:
"There is just smooching, no bedroom scenes."
Source: Perez Hilton / Eonline