If You Dream About A Special Some One Every Time You Sleep, What Does That Signify?

Is there any obsession on your part related to that person? Do you remember that person whenever you want to feel good?
If yes, then all that could be the just because of these factors and won't have any significant meaning.
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That person also comes in nightmares too? And do you remember that person often in your difficult times and try to make yourself feel good?
If Yes, then again, It could be because of that and with no significant meaning.
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But Answer to all above is "NO", then his presence in your dreams is what you perceive from his presence around you in real life. It can also be symbol of that he might be getting in your way either positively or negatively-depending on his activities/behaviors in your dream.
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Also, colors and time of day shown in your dream really matters. You can also contact a professional dream predictor and provide him all the details, I mentioned and get more deep reading.