The two of you together will be like a pendulum -- always swinging back and forth from one extreme to the other and it will be hard to find that happy medium. In the beginning, it will be a true case of opposites attract. You'll find that you express care and affection in completely opposite ways and your ideas of what is a fun social activity couldn't be further apart!
For a while, this could be interesting to you but the differences could start to wear on both of you. You might also project your needs onto each other in such a way that you'll forget to pay attention to your friend's needs, because you'll be so engrossed in your own. You might even try to change each other, remolding each other into the type of pal that you think you want. A true friendship is possible between you, but you'll have to cut through your projections and learn to give to your friend, rather than demanding everything for yourself.