Deen, 27, said of the tape: "Word travels fast, it isn't even edited yet. We shot it yesterday.
"We definitely shot a scene, and in my opinion it was very amazingly awesome.
"I thought she was very nice and super sexy. I had never heard of her before as I don't follow pop culture, but it is nice to see that her fame has not gone to her head."
Deen was snapped holding hands with Farrah, 21, who shot to fame in 2009 after starring in MTV's Teen Mom in the US, at the weekend, but he insists they are not in relationship.
He added: "Not dating at all. I don't know where that picture was taken. Holding hands was to build chemistry and help make her more comfortable.
"I try to be nice to everyone and holding hands is the bees knees, so I figured it was a harmless way to help make her more comfortable before she had sex with a stranger. "I always want everyone to leave the set smiling."
Farrah has denied appearing in any sex tape.
