People Obsessing - OCD

This is very embarrassing. I'm 53 years old. Married 25 years and have two grown children but I still idolize certain people. Instead of idolizing movie stars I obsess over a certain individual. I worry about it too and feel it's not normal. I have a fear that I'm stalking but I don't stalk. I go for months or years obsessing. I don't know why I obsess so. But I decided to use this energy in a constructive manner. I decided to take this energy and started creative writing. I use the obsess person as a base and then develop a character around her. I have come up with some good story telling.

I just find it weird having this tendency. Anybody else out there do the same thing? Is it a gift or a curse?