Why do I keep having dreams about the same woman?

It is a woman I've been infatuated with for a while but I've been infatuated or attracted to different women for years but never have recurring dreams where the same women are in them almost all the time. It's only one woman and I don't think my feelings for her were any different from the other women I've been attracted to and I never have dreams about the other women over and over again. So why do I keep having dreams about the same woman but not the others?