Seems pretty obvious to me that smoking weed makes you socially paranoid. No big suprise there, because the same thing happens to EVERYONE who smokes weed. It's part of what marijuana does.

Dude its all in your head. You can either keep getting high with people and learn to deal with the paranoia, only start getting high alone so the presence of other people won't fuck with your head, or stop getting stoned.

The main thing to remember is that its the drug that is doing this, and it happens to everyone else who smokes weed too. It is why I gave the shit up after years.