Robert Pattinson, Kristen Stewart Spend Night Together

Robert Pattinson and Kristen Stewart returned to LA's Chateau Marmont last week.

They're trying hard, but they're not getting away with anything. With all the travel Robert Pattinson and Kristen Stewart have been doing in the last week, their private rendezvous are almost sneaking under the radar...almost. Witnesses say the Twilight two shacked up together at the posh Chateau Marmont on Sunset Boulevard in Hollywood last Thursday night before Kristen headed to Brazil and Rob took off to Tokyo.

It's said the pair woke up and dined for breakfast together in the morning from Noah's Bagels (Rob had a plain with walnut cream cheese; Kristen had blueberry with butter -- well done, American girl). After bagels Rob snuck off for a cheeky fag (that's what British boys call a ciggy, sillies), and Kristen followed him. There they spent about 15 minutes together. And here's where it gets really juicy, as a source has revealed witnessing the following: "They were hugging, as Rob was smoking his cigarette and then he leaned down and kissed her on the lips. He had his arm around her almost the whole time."

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A-ha! Busted, you two. Apparently after that Rob and Kristen were driven to Hollywood's Deluxe Laboraties to watch New Moon. (It's reported they always take separate cars.)

By Tuesday Kristen was in Mexico City with Taylor Lautner. Japan and Mexico in one day? Yep. We're watching the itineraries closely...

Here are some great pics of Kristen and Taylor Lautner when they were in Brazil.