The 26-year-old actor graces the cover of the September 2012 issue of BlackBook magazine.
The Twilight star shrugged off rumors of getting married to his long-term girlfriend Kristen Stewart.
He said: “There was a magazine, with these pictures, saying I was getting married. Even my own mum called to ask me if it was true.”
He then added: “It’s not. At least, not yet.”
For the magazine shoot, Pattison revealed his arms covered in new tattoos, despite being ink-free in real life.
In the interview, Rob also revealed that he has quit smoking with the help of electronic cigarettes.
“I’m on an all-liquid diet. I had to be shirtless for a photo shoot, so I asked a nutritionist what’s a diet in which you can still drink as much as you want. She said a liquid diet,” he said.
“I was so impressed with myself yesterday,” he added, “I took a pee that was four minutes long.”
As for the incessant gossip about his life, the actor revealed that he has to be careful about the words that come out of his mouth now that he’s famous.
“You try to say things in the perfect way but you know unless you say something stupid, from which people will make you look like a dick, you’re not going to have sound bites,” he explains. “And if you don’t say anything stupid, someone’s going to make something up anyways.”
R-Patz has been busy promoting his latest film “Cosmopolis” and will soon start the promotion for the final chapter of the Twilight series, “Breaking Dawn, Part 2,” which arrives in theaters in November.