I had just joined the Navy as a Junior rating when I found out from a friend that my girlfriend back home was messing around. I confronted her when next on leave, she admitted it, we broke up, A few years later when I returned to my home town on leave I bumped into her at a party and a few dayslater she was cucking the guy she was dating with me. We realised we were still friends, got on, and I realised what she already knew, she couldnt cope being in a monogomous relationship. With that realisation, when I eventually asked her if she wanted to get serious she said she would as long as I accepted she wouldnt be faithful to me. She wouldnt go behind my back and would tell me of all encounters if that is what I wanted of her to and certainly any I asked about. The one thing she promised was she wouldnt lie to me. Eventually I left the Navy and we married. Many many years later we are still married, she uses protection when with someone she doesnt know or trust and we have three grown up children, and yes they are mine, she abstained from extra curricular activites whilst we were trying but jumped straight back into the saddle once she was pregnant. We went down the cuckold lifestyle rabbit hole and as we explored we grew closer and stronger.