DS1 is about to start his A levels. A lot is resting on him being able to up his grades from his AS exams (to do what he wants to do, not what we're pushing him to do). He is very stressed and not sleeping well. (Back story: last year he had a bit of a panic thing going on in exams and did much worse than expected.)
Today I was looking for a guide book that he had had and went in his room (which I have agreed not to do). On open view was an e-cig receipt and rows of bottles of vaping fluid. In an open drawer were further lighter fuel and a lighter plus alcohol bottles galore.
Apart from the fucking idiocy of him vaping and god knows what else (what's the lighter for?) I'm so pissed off that he has been asking for money from me to help pay for a holiday, for prom clothes, for new sunglasses etc etc when he's obviously got plenty to spend on this shit. (Further back story - I'd persuaded him to drop his weekend working hours to concentrate on his A levels so he has less income of his own.)
My dilemma: Do I admit I've snooped in his room, confront him on his idiotic behaviour and stop funding his luxuries? (Risking a big row and upsetting the balance just before his exams?)
Or do I turn a blind eye, let him carry on spending my money on his bloody stupid druggy stuff in order to let him approach exams stress free?
Please tell me what you'd do. 
