Every dream is about the person having the dream. So this dream of your double is about the person that dreamt that dream, not about you.
Dreams
talk to him and tell him how you feel eventually he will understand.
It means you have issues.
Each dream is about the person who does the dreaming. So when you appear in another person's dream, "you" are usually a symbol representing something about the dreamer's self. In this particular dream, the dreamer might feel that you are absent from his/her life in some sense.
If you dream of someone it all depends of what, who and where you dreaming about. A dream is an experience during sleep. Another way to put is a dream is a type of emotions, images, and ideas about something. It might just be a weird dream or it could mean that you like that person. It depends on the meaning of the dream that you had.
It could mean that you are ready to release your x to someone else and move on with your life.
It could mean anything or nothing. Different elements of dreams mean different things depending on the associations a person has--for example, a dream about flying could be fun for one person but scary for another. It is most likely just a coincidence.
This dream only means that the person interests you. Your mind might be using the image of this person to represent something in your dream, such as an attractive, exciting person, or, contrarily, a scary, threatening person. In any case, your dream does not mean that the person was thinking or dreaming about you.
Dreams are about the person having the dream. So this other person's dream is about that person, not you.
Dreams are about the dreamer. If another person has a dream that you are sick, "you" function as a symbol in the dream, representing some part of the dreamer's own life. Their dream is not about you, and certainly provides no insight about your health.
It means you are in love with that person
that you like them