i agree with pumpkinzulu, dianne you dont wanna break that trust and relationship you have with him already, if he is doing something behind your back and you are worried maybe talk to some of his close friends mums and see if they have noticed anything with their son or if their son has said anything.. The deal of trust and respect you have with your son is very rare these days and your so lucky that he can talk to you the way he does.. And if he is suffering from depression maybe that could push him over the line a tad and you dont want that.. I hope everything works out ok and that his isnt touching anything but if he is and you find out about it i wish nothing but big hugs and nothing but support.. goodluck hun