People who preach monogamy are always saying that affairs ruin marriages.
I'm here to tell you they don't, not by themselves anyway.
Depending on the reason for the affair, stepping outside the house can actually hold a marriage together. Both people are happy; who cares where the happiness is coming from? However, poorly managed affairs can indeed ruin a marriage. So, here is my manual to having your cake and eating it too, affectionately called "Affairs for Dummies." NOTE: These rules are not arranged in any particular order; just written down as I come up with them.
Rule #1: Make sure you know why you want the affair.
If it's love or affection you're looking for, get a divorce. Now. If your emotional needs are not being filled at home, your life will be a nightmare. Emotional attachment is what will make you want to spend inordinate and suspicious amounts of time away from the home and with the other person, and that's how people get caught. Emotions also tend to make us complacent, and we don't cover our tracks as well. If you are simply not getting any physical action, then this guide is for you. If your relationship lacks emotionally, you may need professional help. In more ways than one.
Rule #2: Never have someone lie to cover your tracks.
There's a joke that goes like this: "A married woman went out for the evening. When she didn't come home at a reasonable time, he called all of her friends, but none of them had seen her. When she came home the next morning, she explained that she had been at a different friend's house. Some time later, he goes out for the night. When he didn't come home, she called all his friends. Eight said he had been at their house, and three said he was still there."
Gender bias aside, if you ask someone to lie for you once, they could very well assume they need to do that all the time. If it doesn't get you busted outright, it will draw a *lot* of suspicion to you.
Rule #3: Have affairs.
That's right; I said "affairs," plural. Having more than one piece on the side goes a great way in keeping things at a platonic simmer without emotionally boiling over. If one of your extras decides they want more than you can give them, let them have it.
With somebody else.
Needless to say, having multiple sex partners increases your risk of being exposed to STDs, not to mention that nasty pregnancy bug, so use condoms, but keep in mind...
Rule #4: Never pay for anything with a credit card that your spouse has access to.
All your spouse has to do is beat you to the mail one day and look at the bank statement; next thing you know, you're getting the third degree about a $90 charge to the local Holiday Inn.