You're the One

Fionna and Flame Prince have dated for years, and yet their relationship seems to be fading away. On the day of their aniversary, Flame Prince breaks up with Fionna, leaving her in tears...

and unconscious.

It just so happens Marshall Lee ends up finding her. After so many years of having a perfect best-friend close relationship, the two experience new feelings for one another.

However, in order for the two to live a happy life together, they will have to overcome all the new troubles ahead of them. And that includes rivals, and dangerous situations.