Lyric discussion by DarthMilon 

Cover art for I Did It lyrics by Dave Matthews Band

Ok, here's my two cents: I think Dave is trying to spread love around and make people get addicted to it like a drug. Instead of selling/using drugs or what not...try love instead...and then spread it to others. That's why there are so many referrences to drugs. I think he's using drugs and love as a metaphor.