Your friend has quite an original, unpredictable side, which will be very noticeable to you through the course of this relationship. In fact, their uniqueness will present a real challenge as you push forward on your own quest to live the life you're meant to live. In one way or another, their need for freedom will take a central role in this relationship; you'll find yourself constantly having to deal with the tension created by their odd, original ideas and goals.
This could get tiresome after a while, in large part because you need some support and respect yourself. Your buddy has their own ideas about the way the world works and the goals that are worth pursuing, and you can bet they'll challenge you every step of the way about where you're headed and why. But with such different concepts of the future, of what's important, it's no wonder that this constant challenge will become a real source of frustration for you.