Sin

http://www.fanfiction.net/s/10376209

AU. When Kate meets her new neighbors, Seth and Vanessa Gecko, she immediately develops a crush on the handsome man. She does her best to fight her growing crush, but as she and Seth become friends, and she realizes that there is a LOT of trouble in Seth and Vanessa's marriage, Kate begins to fear that she will stop caring that her feelings for him are pure sin. TWO-SHOT.