We have the same mother and when we were teenagers we end up in the same school and we had common friends. We knew we were related but when we were among our friends we didn't feel like brother and sister and that became more evident with time. We started having sex when we were teenagers. Then we went to college and during that time, our father died and her mother. After one year we moved to another state and decided to get married, we told to my mother. We never had kids and we live as husband and wife for almost 40 years. And I still love to go deep in her pussy, just like the first time.