Kissing a boy isn't bad right? Kissing a bad boy with tattoos scattered across his arms and piercings isn't bad right? Of course not. But what if it's your brothers best friend? Sisters aren't supposed to cross those boundary lines. Best friends aren't supposed to cross those boundary lines. What happens when Niall pushes it a little too far? *AU punk One Direction and cameo 5 Seconds of Summer.*All Rights Reserved