Passion is the infatuational, sexual side of love. A person experiencing passion accepts a person on a physical level, and feels “love” when there is “chemistry”.
There can be a sense of mistrust in the other person, since the main basis for the relationship is physical. This means, how can you trust someone who so eagerly jumps into a purely physical relationship?
People who experience great passion with their partners are “in love”, but it is the type of “love” that will die quickly if the chemistry fades. There is no real commitment made, despite the great passion between the two people. People experiencing passion often part ways in search of the next infatuation when the current one grows stale.