Cheating sister in law
One of the sidelights of having a long-time relationship with someone is that one also becomes entrenched with other members of their partner’s friends or family. As frequency of interaction increases, those others become more familiar and, certainly, the comfort level of being around them rises. In some cases, familiarity breeds comfort, which, in turn, breeds flirtations and some good secret fun. This is about one of those cases in my own life. Having been with my wife for a total of 5 years...