Robert Pattinson and Kristen Stewart Caught Kissing!

More details are emerging about New Moon co-stars Robert Pattinson and Kristen Stewart’s sleepover at famed Hollywood hotel Chateau Marmont last week—and we must prepare you, readers, they’re pretty steamy.

A source tells Us Magazine that, after spending the night together on Thursday night, the rumored lovebirds replenished themselves at Noah’s Bagels—and then headed off for the New Moon screening at Deluxe Laboratories, where the two quickly resumed their canoodling. Says the source, who says they were taken to the screening at about 8:30 a.m.,

“Rob wanted a cigarette so he went outside with Kristen for about 15 minutes. 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.”

We’re assuming that Kristen wasn’t put off by R-Pattz’s ashtray breath.

Let us know in the comments section: Do you think Robsten will go public with their relationship soon? Should they?