My nephew is my oldest sister's son, we have 9 years age difference between us. When I was a teenager I used to be his babysitter an d we became very close. When he became a teenager I got married but we always got in touch with each other. At the same time while I was getting divorced, my nephew's fiancΓ© left him and these were the reasons we got even closer to each other and started having sex. We live together now but no one in our family knows about it.