He wants to be more than friends

Ok so, I am on exchange in Germany and last night a bunch of kids from the school went to a pub after dinner , it's a boarding school, and I was talking to a guy, not my type, just someone who I would consider a friend. Anyway I left after talking with him for 10mins and when I got to my room he had messaged me and wanted to take to a golf club for dinner tomorrow night. I said yes, should I go what should I do? It would be my first date ever. I have a crush on one of his friends. I only have one week left on exchange and he is three years older