Robert Pattinson Wild Partying 'Cocaine Binge' After Kristen Stewart Split? 'Twilight' Heartthrob 'Snorts Coke Across LA'

Robert Pattinson took his break-up with "Twilight" sweetheart Kristen Stewart rather well - but then the British heartthrob allegedly went on a wild "cocaine binge" across LA. At least according to a shady report in Star magazine, that is...

The infamous gossip rag claims that while partying at Viper Room nightclub last month (Sept. 7), R-Patz was "snorting bump after bump of cocaine." This crazy drug binge apparently "spanned three different locations and lasted nearly until dawn."

An alleged eyewitness explains, "Rob was doing coke all night... Rob tried to be subtle by scooping the coke out of a baggie with a key, but he was still in plain view of others in the room - and he looked like he knew exactly what to do."

The source goes into even more detail, insisting that 27-year-old Pattinson "continued to party excessively" at the Chateau Marmont:

"Rob went to the bathroom alone multiple times with the bag of cocaine... He got nervous, anxious and defensive toward the end of the night, which seemed in keeping with all the coke he'd been doing. He was paranoid that people were watching him."

Then, the party moved on to R-Patz's Hollywood home.

The fellow partier continues, "Once we got there, Rob quickly suggested that the guy with the coke break out the drug again. He was craving more and wanted the party to continue... He needs to stop hanging out with certain people who are not concerned for his well being."

Apparently this "source" is one of those people! What sort of close "friend" becomes such a gossipy-snitch?

Star finishes off with, “Rob’s coke binge - which started where River Phoenix OD’d and continued at Chateau Marmont, where comedian John Belushi met a similar fate 31 years ago - could be a sign of worse danger to come.”

Could be true... but as Gossip Cop points out, this insane drug binge allegedly happened over a month ago. Why is this unnamed person just talking about it now? Plus, there's absolutely no photos or other eyewitnesses to prove this "coke-snorting partying" ever really happened. Today, R-Patz actually looks quite healthy.

Do Mstars fans believe the rather serious cocaine allegations?