As I am doing a really good friend a favour by looking after her son I am happy to work with him and have an adventure that we both enjoy. I don't think that being quite so tough will really help things although I do understand where you are coming from.!!Mate, might I suggest that you get him to pick his food and cook it himself. Non vegetarians cooking for vegetarians is a recipe for disaster.....literally. Not only that, it wrecks it for both. Give him some space in the fridge and a $20 cooker. I'm speaking from experience, there are vegetarians and non vegetarians in my house. If he starts preaching about it then kick his arse.