Karmic Friendship is a  profound, mysterious connection towards certain people we meet in our life. They click to us at the very beginning. Bonds develop quickly. Such bonds of friendship go much beyond mere acquaintance; there is a genuine mutual affection and acceptance.
When majority of the important factors in two horoscopes are mutually in harmony, a mysterious affinity is created. Such persons may not necessarily have to share the same hobbies (You may be passionate about movies, your Karmic may not be) - this doesn't stop two karmic friends to be drawn closer. 
Karmic friendship may or may not translate into a romantic relationship.