I agree with what everyone else said.
Staying sober will weed out the real friends from the ones you don't need. I'd say it's a good idea to stay away from this guy for now. Things might change down the line, and they might not. People say really stupid things all the time, and this might have been one of those times. Only time will tell however. I'd keep away for a while.
Some of my friends took actual bets on how long I'd stay away. I didn't hang with them.