Your moods won't always match up, which could create some frustration for both of you over the course of this friendship. One of you may have a sexual attraction for the other, leading to a feeling of unrequited love between you, which will be difficult on both sides. But the disparity between your energy will be the most noticeable issue.
You may take on the assertive role in the friendship, but you probably won't find your buddy to be willing and eager to go along with you. Your rhythms won't match up, and you may both end up feeling as if you're not getting what you want or need from the friendship. The solution? As with any mismatch, it will take open, honest communication and compromise on both sides to make this work.