Yes, it's relatively common. In society, we often see such pairings. It can be due to the reasons mentioned before like the perceived stability and maturity of older men.
I recommend a fantasy romance novel called " Netherworld Peach Blossom." The main character was a peach tree spirit. After she turned into a woman, she fell in love with an emperor and could not let go. Later, she was bewitched by the King of Hell, but she was unwilling to commit herself. In the end, she turned into a ferryman and led people to the underworld. This book is a little yellow, but the plot is still very attractive. I hope you will like this fairy's recommendation.
😋I recommend the following novels to you:
1. "Student Lin's Super Warm" tells the story of a couple in high school and university. Although the writing is not very good, the plot is close to real life and not too dirty.
2. "Flowing Time is Just Gratitude for Meeting": It tells the story of the male and female protagonists growing up and meeting each other from junior high school to university. The plot is warm and touching, and it suits your requirements very well.
3. "Goodbye, Arts Student": It depicted high school life in a relaxed and natural manner. There were not many intense plots and it was very close to reality.
I hope you like my recommendation. Muah ~
One interesting 'Dragon Age' fanfiction related to 'lust demon' could be one where the protagonist has to face the allure and danger of a lust demon in a unique quest. Maybe it involves a mage who has to resist the demon's charm to save their comrades.
Older guys may also possess more life experience. They can offer different perspectives and advice, which is fascinating for younger girls. In the story, perhaps the girl was drawn to the older guy's stories about his travels and adventures around the world.
It can be shown through the young girl's internal thoughts. For instance, the author could write about her daydreams and secret longings for the older man. Just like in some classic novels where the young heroine has a hidden admiration for an older, more experienced male character.
One reason could be that older guys often seem more financially stable. They may have established careers and can afford a more comfortable lifestyle, which can be appealing to young women. For example, they can afford nice dinners, vacations, etc.
The story revolved around a girl who was adopted by her adoptive father since she was a baby. The adoptive father's love for her never diminished, and the two of them eventually stayed together in the midst of hardship. Although there was no orange in the name, there were orange flowers in the story. It was very heartwarming. I hope you like this fairy's recommendation. Muah ~😗
I'm not sure of a specific one off - hand, but you could look for fanfiction on popular 'Dragon Age' fanfiction websites. Try searching for 'lust demon' in the search bar and see what comes up. There might be some great stories out there waiting to be discovered.