An affair with my Cousin

After finishing university and waiting for a job offer from one of the companies I had applied too to come. I seduce my cousin; she was 2 years younger than me and far too trusting of me. I got a job and left to start my career, a few weeks later I was shocked to have my cousin turn up at my apartment door. She was pregnant and as I was her only lover I was the father of her child. I should've realized she wouldn't be taking precautions, as she didn't and was reclusive except in relation to family. Luckily, she hadn't told the rest of family about getting pregnant yet. I'd no choice but to take in and after the family got use to our relationship, we settled down living together. I do feel close to her and enjoy her company and love the 4 children she has given me in the 10 years since. All are healthy and she is my wife in every way except actual marriage, I've also had promotions and moved overseas to Europe to further my career. Having a wife helps me career wise as a married man is seen as more stable. A spur of the moment proved to be life changing for me and my wife/cousin.