Surrendering to Temptation

Flame Prince is lost in the Doomed Forest. Fionna goes missing along with him. It's up to Prince Gumball and Marshall Lee to find them and bring them back! But can they do it without ripping each other's heads off? This is indeed slash; yaoi; boyxboy. Don't like, don't read. Marball; Gumball Lee; GumLee; whatever you want to call it. Also, FlamexFionna.