You and Sebastian are step siblings, your mother and his father got married a year ago and you all have been living together ever since. But as time progressed you both appeared to be developing feelings for each other... You both come to situation that made you confess to each other.... But you agreed to try and keep them at bay, agreed that nothing will happen between you ever cause you were family even though not by blood, still a family... Both of had a hard time hiding your feelings from each other even though you knew the other felt the same way, you had to be careful, always watch what you say to him, but sometimes you couldnt resist, you just couldnt and get closer, not romantically or intimate just.... closer... Emotionally closer, like when watching Tv you would cuddle or sit close to each other, the only thing your parents see is that you two have just gotten along pretty well with each other.... Only if they knew the struggle you're both going through in order to make them happy