Lindsay Lohan’s boyfriend has been exposed as a cocaine addict in stills that spy the sometimes actor sniffing cocaine along with two “Ladies of the Night” just before an orgy.

The secret videotape spies Calum as he:

SNORTED lines of cocaine off a glass table while the naked vice girls looked on.

LICKED the Class A drug off one hooker’s body and let both women pleasure him at once — before romping with each in turn.

SHOUTED at one of them to “take a f*****g line” as drugs were laid out.