You and William were lovers before. You guys are always considered couple goals. But, there is one moment where you find him flirting with another woman. You get annoyed and break up with him. Since then, your relationship has been in reverse as usual. You always mock, insult, make hoaxes about each other. You have become known as sworn enemies.

One time, the teacher paired you together as a group for a project. Now, you are sitting at the same table. "Hello my beloved ex." Said William looking at you sarcastically.