Constantly having dreams about the same person indicates that this person is either consciously or subconsciously on the dreamer's mind a lot. The continuous dreams can be a sign that the dreamer has unresolved business with the person or has not been forthcoming about the dreamer's true feelings.
Dream interpreters advise people to contact those who they are dreaming about and to deal with any unresolved conflict with that person. It is important for people to tell those in their dreams how they really feel and to settle any conflicts that they have. Doing so allows a person's subconscious to feel that the matters with that person have been dealt with.