I have mixed feelings about one nighters... On one hand, I don't think there is anything wrong with it, in moderation. I mean, everyone has needs, and everyone is going to succumb to temptation here and there, but if it's a part of your lifestyle, and you are notorious for it, then it's a problem. It shows you have no self control, and in a relationship, you can't be trusted, which is the foundation for success.

I've had a few in my day, and my current girlfriend (whom I'm probably going to marry in a few years), has admitted to a few. While I wasn't happy about it, I was relieved to know because it answered a lot of moral questions for me.