hmm, well I agree with all the above in regards to kids. if they have them, stay away. they have problems and need to work that out and think of the kids.
no kids, your call really. I had something similar happen and she didn't have kids, but I also didn't know she was married until things already happened. but that didn't stop things from happening a couple other times. never had sex, but the best BJ's I have ever had. last I heard she is still with the guy and has two kids. so maybe it was just that little extra excitement she needed at the time. it is the husbands job to please the wife enough to keep them happy at home in all aspects of the marriage.