It may be that person was really attractive, and there's nothing wrong with being attracted. It may be that some part of your marriage wasn't that exciting, and there's nothing wrong being bored. It may be just a little incident, and that's nobody's fault. It may be just you looking for some exciting and you seem to be regretful, and that's perfectly allright. People make mistakes all the time. And FYI, one night stand is pretty common in North America, nothing to be pround of, but that's just the reality. We're not living in a perfect world, nothing is perfect. That's everyday life....