Yandere mets partial yandere

Person A was living a normal life. Nothing out of the ordinary was happening. They didn’t have a partner, but weren’t trying to find one. One day, person A had a feeling that they were being watched. They looked around, but didn’t see anyone looking at them, even though they felt someone looking directly at them. Eventually, person A got home and was relax. Out of no where, they heard a voice behind them say something. As the looked behind them, they saw person B was looking directly at them, like they have been for a period of time now. person B told person A that they are a yandere and loves them. (I tried to leave a lot of gaps in the story, like names, amount of time, etc. So if anyone wants to use this reference, they will be able to make it unique for themselves. If you want to reach out to me for ANY reason, including having no reason at all, please do so. )