Armie Hammer, who plays Clyde Tolson, FBI boss J. Edgar Hoover's alleged lover in the Clint Eastwood-directed J. Edgar, says kissing Leonardo DiCaprio in the movie was like kissing.

DiCaprio, who stars as Hoover in the period drama, has previously said he's not certain if rumors that the two men were lovers are true.

At the film's premiere, he told E! Online that Hoover's sexual orientation remained a mystery to him.

“To tell you the truth, I don't have the answer to that question and I don't think there's anyone still alive who really does,” he answered.

“If you talk to the Federal Bureau of Investigation, there are staunch believers that these two men carried out a very professional relationship and they were sort of inseparable pals,” DiCaprio stated, referring to Tolson.

“These two men went on every vacation together. They ate breakfast, lunch and dinner together. They went to work together. They were together for 50 years. They lived together. They were buried together. They never had a family. They never had a girlfriend. You know, put it together in your mind …,” he added.

In an interview with, Hammer says a professional researcher he hired unearthed photographs of a sleeping Tolson taken by Hoover.

And in remarks with New York Magazine, he talks about filming a kissing scene with DiCaprio.

“It just felt like kissing,” he said. “I also had to shoot a machine gun in the movie, but nobody asks about that.”