Following the Robert Pattinson and Kristen Stewart break up the actor has been romantically linked to plenty of Hollywood starlets with a particular light shining on his relationship with his and his ex-girlfriend's mutual friend Katy Perry.

Most women would kill to get hot and heavy with the "Twilight" actor however, Perry revealed that she has never had sex with the British hunk.

According to the Daily Mail, the "Firework" singer told ELLE UK that the two were just friends, "He's my bud, I'm like his big sister."

"We just hang out," she revealed.

John Mayer's 28-year old girlfriend directly addressed her and Pattinson's sex life, she said, "One of the things I'm most proud of is not sleeping with you, Robert. And that's true."

Perry told the September Issue of Elle UK that there is no way her and Pattinson were hooking up, she said, "OK, so here's the proof there was never anything going on with me and Robert Pattinson," she went on to say, "I fart in front of him. Properly fart. And I never, ever fart in front of a man I am dating. That's a rule."

After his split from Stewart following a four year relationship the actor began to hang out with Perry more often and reports surfaced that the "On the Road" star felt betrayed over their close friendship.

Addressing Stewart's feelings of betrayal the "Wide Awake" singer said she contacted the actress to assure her that her relationship with Pattinson was strictly platonic.

Perry told the magazine, "I sent her a text message saying, 'I know you've seen all this stuff, but you know I would never disrespect you. I'm not that person."'

She went on to say, "I'm just trying to be a friend to him, but it is unfortunate that I do have a set of t**s."

Do you think Katy Perry is telling the truth about the extent of her and Robert Pattinson's relationship? Or do you think she is just saying these things to put Kristen Stewart at ease? Let us know your thoughts below.