Don't expect this to be just a fun, frivolous friendship. If you have a problem to solve or a project to work on, your pal will help you give it a much more concentrated effort than you might on your own. You'll probably come to depend on their point of view because they'll give you such solid, practical advice.
If you aren't used to being thorough in your thinking, you'll be challenged to think things through in a much more careful way. Your friend will point out the weak points in your logic and require every idea you present to them to be solid, with ample proof backing it up. Will this get tiresome sometimes? Sure. But it could help you develop mental skills that you'll use for the rest of your life. Don't expect many flights of fancy in your conversations.