I found this movie interesting but confusing. For example, when she was robbed the boyfriend appeared to be supportive, as though he had no idea who robbed her, but later it turns out the, apparently, he robbed her and she knew it. First, it didn't appear to me that she had anything worth stealing, considering his habit and how did she know?
shareI wondered too how she found out. Maybe she first had a hint based on his reaction after he told her they'd been robbed. He went to call the police, but then slammed the phone down and punched the wall. Next thing you see is the two of them on the way to Venice, followed by them being in Venice and she starting to cry and then confronting him, saying "You stole from me." It's never made clear. But she did have camera equipment worth a lot, and she had several hundred pounds sterling for the trip.
The only thing that was clear was that he was a total scumbag, in his lying and using her for sex and money, which is what drug users will do. Anything for the fix.