Robert Pattinson flew right back to Toronto after the MTV Movie Awards and has been working almost around the clock on his latest film, “Cosmopolis,” with co-star Sarah Gadon. They were spotted filming at night.

Pattinson and Gadon were shooting scenes together, June 9.  Rob was  just wearing a white shirt unbuttoned at the collar and dark slacks.

Not surprisingly, some of the sleazier tabloid Web sites (you know who you are) have speculated that Pattinson and Gadon have been getting close on the set.

While so-called locationships — two stars hooking up while they are shooting –are rife in Hollywood, the reports have been largely dismissed.

Check out Rob’s photos; click to enlarge.

Kristen hasn’t been spotted in Toronto, but she was seen out and about Rob’s BFF Tom Sturridge and girlfriend Sienna Miller in London, Wednesday, June 8.

They were seen having dinner together at the St. John Hotel before heading to London’s Groucho Club.

Rob was spotted arriving in Toronto on Monday (June 6) at Toronto Pearson International Airport.

The film is an adaption of Don DeLillo’s a sort of “Bonfire of the Vanities” take on a billionaire who sets out in his limo to get a haircut and sees his world turned upside down.

David Cronenberg is directing.

Also starring in the film are Juliette Binoche, Paul Giamatti, Samantha Morton and Jay Baruchel.

Check out Rob hard at work. Click the photo to enlarge.