Love Within Family

My sister has had enough of her husband's tantrums after daily heavy drinking and filed for divorce. She had walked out and needed a place to stay! I'm on my own and I offered my place for refuge. It's small but comfortable for a lonely soul.
When she arrived I helped her inside my studio apartment with her luggage. She looked up into my eyes saying how safe I've always made her feel. I hugged her saying that was my job as her brother. I said I'd always protect her from anyone and everything. She knowingly nodded. I watched her hip sway as she went into my bedroom.
I walked into my bedroom seeing her laying there by the light of the moon and the street light. Her form was uncovered by the sheets but she was still clothed. She looked gorgeous, so feminine and so sweet. I lay down next to her and she reached out to hold onto me. She'd been crying. I held on to her and we slept peacefully in each other's arms.This turned to be routine till about a week later we hesitantly began mutual exploration of our bodies. The initial spark ignited the passion and led to unrestrained lovemaking. It's now been 12 years since that first night, we've got 3 kids, all are normal healthy kids and we are a loving family. When my sister conceived for the first time we made the decision to tell our parents about our relationship and that the child she was carrying was mine. They were shocked, but they came around pretty quick. Even though we live miles away we still see them a couple of times a year and they visit us too. The kids don't know that their mom and dad are brother and sister and neither do any of our friends or colleagues at work. To all around us, we're just another young and loving family!