Is it possible that this guy is guerilla growing himself. Went to europe planted a crop harvested it. Came back to the real world. You said no one knows you grow. Perhaps since you guys aren't friends he doesn't want YOU to know that he grows?? Perhaps he grows or went and made some connections and knows that you have good bud and might be a kindred spirit, that would be an asset to anything he were trying to do? It would explain why he's coming over more. You been smoking alot of Sativa lately? Paranoid much? Just wanted to give another perspective...
If your that worried about invite him over. Talk to him see whats up. You don't like the answers then you can always "shoot him in the face" as suggested.
As for the coming over unannounced. A little while back, I found a cure for this most annoying habit. Whenever someone comes over unannounced. I wait until that evening or the next morning depending on when they came over. I wait until dinner time then show up. Or if its the morning I make sure they wake up to my smiling face knocking on their door. "Whats up man, kinda early isn't it? Yeah sorry for coming over without calling THAT SHIT ANNOYS the hell out of me, know what I mean? Anyway (insert your excuse for being there). Works for me everytime. Just my pennies
If your that worried about invite him over. Talk to him see whats up. You don't like the answers then you can always "shoot him in the face" as suggested.
As for the coming over unannounced. A little while back, I found a cure for this most annoying habit. Whenever someone comes over unannounced. I wait until that evening or the next morning depending on when they came over. I wait until dinner time then show up. Or if its the morning I make sure they wake up to my smiling face knocking on their door. "Whats up man, kinda early isn't it? Yeah sorry for coming over without calling THAT SHIT ANNOYS the hell out of me, know what I mean? Anyway (insert your excuse for being there). Works for me everytime. Just my pennies