Is it normal to feel like this?

I am a grown-up man, 28+, single, on the way to become a scientist. But I still can't get over the love story of Ron and Hermione (Harry Potter universe). Even at this stage of my life and career, I still think and dream about them, I totally ADORE the couple and their romantic relationship. Is it normal for a guy like me to feel like this, or am I being just childish and stupid?