You’re both very popular musicians, but you’ve always had a rivalry. There was no reason why you didn’t like each other but you still hate each other.

One day you get a call from someone on your PR team saying that it would be good for “your image” and hers if you both fake dated. Eventually you both agreed to it

A couple months later you had to go to an event with her and “announce your relationship”. Neither of you were looking forward to acting happy all night. But here you both are.