Actors Robert Pattinson and Kristen Stewart win the Best Kiss award for the movie "Twilight" at the 2009 MTV Movie Awards in Los Angeles May 31, 2009. [Agencies]

Robert Pattinson allegedly spent the night with his "Twilight" co-star.

The 23-year-old British actor - who plays vampire Edward Cullen in the hit film - was seen checking into a Los Angeles hotel with Kristen Stewart, who plays Bella Swan, following an intimate dinner together after the MTV Movie Awards on May 31 night.

The pair - who are both believed to be in relationships with other people - dined at Cecconi's until around 11pm, where they were accompanied by a police escort to The Charlie Hotel in West Hollywood. They didn't leave their private bungalow until noon the following day.

A source told gossip website X17online: "Robert was preoccupied with getting all of his stuff in the car and Kristen was hiding behind her sunglasses, looking a little tired, but waiting to say goodbye. Right before Robert got in the SUV, the couple stood together behind the car door and I'm pretty sure there was a brief kiss!"

Robert - who has been pictured several times with stunning blonde Erika Dutra, sparking speculation she is his girlfriend - was then driven to LAX airport while Kristen - who has been dating actor Michael Arangano for several months - returned to the bungalow.

Kristen, 19, has previously blasted reports she is romantically involved with Robert.

She said: "It's just totally false. Robert and I are good friends. We went through a lot together, so we feel very close. But if we go out in public, every little detail is scrutinised, like the way I stand next to him.

"And it's like, I know the guy really well. It's only natural that we sort of lean on each other, because we're put in the most psychotic situations."

(China Daily/Agencies June 3, 2009)