It could be that they haven't fully moved on and are keeping tabs on you. Or they might just be bored and randomly scrolling through stories, and yours happened to catch their eye.
To keep a novel fresh, you should explore new themes. Don't always stick to the common ones like love and revenge. Maybe delve into something more philosophical or cultural. Also, use modern or unique writing techniques. Stream - of - consciousness writing or non - linear storytelling can make your novel stand out. And constantly challenging the readers' expectations is key. If they think they know what's going to happen next, prove them wrong.
One secret is to create complex and relatable characters. Readers need to be able to connect with the characters on some level, whether it's through shared emotions, experiences, or dreams. Another is to have a unique plot. Avoid overused storylines and surprise your readers at every turn. Also, the use of vivid and engaging language can keep a novel captivating.
You should immediately stop thinking about it. Try to focus on positive aspects of your own life, like your hobbies or career. It's inappropriate to dwell on such things.