Read the following context and answer the question.
Context: After 7:00 PM , I packed up the booth and spent the rest of the night hanging out with friends , most of which consisted of bouncing around between various locations and drinking . Friday was my big drinking night of the con , amusingly . And , no , Adrian did not drink all of my beer . But he did n't only drink one of them , like he claims .
Question: What is Adrian 's relationship to the OP ?
Answer:


His friend .