It's not stealing persay, more like taking advantage of some mindless sap. It is his fault, but at the same time, a cruel and evil person takes advantage of his ignorance. I would at least give him some bud at a really cheap price without reason. If he asks, just tell him you guys are tight so you're giving him a deal. The guilt should go away, or at least subside for the time being.

But...ahhh, anyways...you got any of that bud for sale? (hypothetical, HA!)