Rob Pattinson prefers to drink alone and in mass quantity—problem?

MORE intimate details of Rob Pattinson’s life are being revealed… NOW it’s being reported that Rob’s friends are very worried about his drinking. It’s gotten really bad since his break-up.

Duh! Give the guy a break! He just got publicly cheated on by his famous girlfriend and epic film co-star.

However, Rob’s little drinking problem appears to be nothing new…it has allegedly been an ongoing issue for the past 5 to 7 years.

An inside source said that Rob was “drinking every day on the set of Cosmopolis and everyone on the set was aware of this.”

Oh…that sucks. Ok, well—at least—give him a few more weeks to enjoy his destructive drinking before staging the intervention.

We hear Kristen Stewart used to find empty bottles of ‘Tru Blood’ beer stashed all over the house, and that he’d get really wasted, order a pizza (to soak up the booze) and then attempt to “turn” the delivery boy. But, his fake fangs just left a nasty hickey—turns out.

Teasing! Rob actually prefers “vodka and drinks alone,” said the insider.

Overall, this story seems a little bogus to us, but you never know…it’s always the quiet ones…