Perhaps she went outside for a walk to clear her head. After stopping watching stories, she could feel like getting some fresh air and exercise. This would also give her a chance to think about other things or just relax in a different way.
She could have decided to call a friend. Since she wasn't occupied with watching stories anymore, she may have thought of reaching out to someone and having a chat.
She might have started reading a book.
It might be that your stories have become less interesting to her. If they are always about the same topics or lack creativity, she could lose interest.
Perhaps there was something in one of your stories that made him/her uncomfortable. It could be a topic, an opinion or even just the way you presented it. So he/she decided to stop watching.
Maybe he still has some interest in you or just happens to come across them.
[The Forcibly Twisted School Hunk Is Sour and Sour. She Doesn't Chase After Rebirth] was a modern rebirth novel by Su Xingyun. This novel told the story of the female protagonist, Su Jiani, who pursued the school hunk, Chi Yu, but eventually gave up and was reborn before the college entrance examination. However, the search results provided did not provide the specific source of the free reading.
You could try changing the content of your stories. Make them more exciting, for example, by sharing some unique experiences or interesting news.
In the novel, after she left, the setting might have changed. If she was associated with a particular place, that place could have become desolate or lost its charm. Also, the relationships between the remaining characters could have become strained as they adjusted to her absence.
He might notice that you're no longer engaged and feel a bit disappointed.
It's possible that he lost interest in the content of your stories. If your stories have been about the same thing over and over, he might have gotten bored. Another reason could be that he has found other sources of entertainment or information that he prefers.
She might notice that you're no longer viewing her stories and feel a bit disappointed or curious about why. But if you two aren't that close, it may not matter much to her.
Perhaps they are simply tired of the type of stories they were previously watching. It might also be a sign that they are moving on in their life and don't want to be involved in the passive consumption of stories that might be related to people or topics they no longer care about. For example, if those stories were from mutual friends, they may be cutting off that aspect of their past life.