Yes, it's very likely that Alexandra is a character in a Harry Potter fanfiction named 'Alexandra Quick'. In many fanfictions, the title often features a main character's name.
As I said before, without more context, it's hard to determine who they specifically are. They could be just ordinary people in a small town with their own simple and beautiful love story, or they could be figures from a certain historical era or a fictional story.
I don't have enough information to say who they are exactly. They could be ordinary people with an extraordinary story, or they could be well - known in a specific community or area.
I'm not sure who 'Pamela Novel' specifically is. It could be an ordinary person with that name, or perhaps it's a name in a very specific context like a small community, a family name, or even a made - up name in a local story.
I'm not sure exactly what this Alexander and Alexandra's love story is. But let's assume Alexander was a writer and Alexandra was an artist. They could have met at an exhibition. Alexander was fascinated by Alexandra's creative works and Alexandra was attracted to Alexander's deep thoughts in his writings. They began to communicate more, and soon love blossomed between them. They traveled together, exploring different places for inspiration, and their love story continued to unfold.
I'm not sure specifically what Alexandra's secret story is as there could be many Alexandras with different stories. It could be about a hidden talent, a past adventure, or a personal achievement she has kept private.