Dear Dave, I own a duplex that has an opening for a tenant, and an old college buddy wants to rent the apartment. He has always been a good friend, but I’m a little worried about the possible effects on our friendship if business is brought into the picture. Do you have any advice? —Justin Dear Justin, You can make this work, but you’ll both need to be careful. It’s going to take a lot of honesty and maturity from you both. Doing business with friends always comes with the risk of running into a situation that can damage the relationship. Am I saying never do business with friends? Of course, not. I do a lot of business with friends. I just make sure all the specific requirements and expectations of the business relationship are laid out in clear detail, in writing, and fully understood by both parties before a …