University students surprised to learn their maths professor was a gay porn star

Students at an Italian university were shocked to discover their maths professor used to be a gay porn star.

The past life of Ruggero Freddi, who teaches at La Sapienza University, in Rome, was found out after some of the students spotted a picture of him flexing his muscles in a revealing photo on Facebook, the Daily Mail reported.

Freddi, who used to go by the name Carlos Mas, starred in adult films with titles like Big N Plenty and Man Country.

Freddi had left Italy for the United States (US) after his engineering career didn't take off. It was there he got into the porn industry to earn money.

However, he is not upset that the cat is out of the bag. "Some students re-posted the photo on a few sites and from there my former life as a porn actor emerged. To be honest, it wasn't exactly a secret," he told Republicca. Freddi also revealed he was proud of both his careers.

After his time in the US, he returned home and got a master's degree in mathematics. He currently lives with his partner who he has been with for 11 years.