I read your query with diligence. Seems like the alcohol binge has got on the health of your boyfriend. Added to it, he has not eaten at all.
He most probably has these now:
1. Electrolyte imbalance
due to alcohol consumption
We need to correct his fluid and electrolyte immediately. Please make a solution of oral rehydration fluid using Electral or Resomol solution at your home. Make your boyfriend drink it every half an hour. Give him direct sugars to eat.
It is best managed if you can take him to a nearby hospital. I suggest you this because alcohol binge can sometimes cause fatal arrhythmias as well.
Wish both of you a good health.