Well, if you masturbate regularly, you won't have wet dreams ever! Most guy will actually never have them (since we all masturbate like at least once a week when we're teenagers). You only get wet dreams if you haven't masturbated for a while. Anyways, they're a nuisance (messy, and embarrasing!) so you shouldn't be worried about not having them (I don't think I've ever had one, unless I had one before I was able to ejaculate).