In further investigation, Gossip Cop managed to dig out information from the story's reporter who confessed he was writing it based on his own interpretation of what Pattinson said.
Robert Pattinson did not exactly say he was dating his "Twilight" co-star Kristen Stewart during the BAFTA Awards post-party. Since the news came in shaky and originated from a tabloid, Gossip Cop went investigating for the truth to the source of the story, The Sun's reporter who questioned the actor.
The unnamed reporter was the one admitting now that Pattinson did not say he is dating Stewart, confirming Pattinson "didn't say 'we are a couple' " and adding "he wasn't going to spell it out in great detail". Regarding why the reporter quoted him as saying "We are together", he said he was actually questioning "Is this a public appearance together?"
As for how he led to conclusion that Pattinson "admitted" he was Stewart's boyfriend, the reporter said "That's my assumption from what he said."