The plot could be a love story in a really unique way. Withered Bonnie, with his worn - out appearance, might be initially shunned by Toy Chica. But as time goes on, she sees his kind 'heart' (if animatronics can have such a thing). They could then have a relationship that defies the expectations of the other animatronics. For example, they might share secret hiding places in the pizzeria and have little 'dates' where they just sit together and exchange their experiences.
At first, it might be a reluctant partnership. Maybe they are forced to work together to survive some kind of threat in the pizzeria. During this time, they start to see the good in each other. Toy Chica might notice how Withered Bonnie is protective, and Withered Bonnie might see Toy Chica's intelligence. This mutual admiration could then turn into a deeper relationship over time as they continue to interact and support each other.
For Bonnie and Chica's wedding fanfic, it all started with Bonnie's proposal. He had planned it for weeks. He took Chica to their favorite spot in the pizzeria and got down on one knee. Chica was overjoyed and said yes. As the wedding day neared, they invited all their friends. The wedding was a beautiful affair. There were flowers everywhere. Bonnie and Chica were both beaming with happiness. They had a wonderful ceremony and then a grand reception where they shared their first dance as a married couple.
Definitely not a true story. FNAF is a work of fiction that takes place in a fictional world with its own set of rules and scenarios. It's all about creating a thrilling and immersive gaming and storytelling experience, not reflecting reality.