*COMPLETED* (Y.O.L.O stands for: YOU ONLY LIVE ONCE) *** Carter Jones, the school nerd, and Killian Henderson, the reputated troublemaker, somehow end up getting detention together. "How about we make a bet?" Offered Killian, his pistachio-green eyes drilling into mine as a playful smile lingered on his lips. "A bet?" I gulped, intimidated by how close he was sitting next to me. He nodded and raised four fingers, the ones with the letters "Y.O.L.O" tattooed on them, wriggling them in front…