First off... I will state; I did not read the other answers prior to this answer, but will afterwards.
Here's my take. I personally think cheating is an act of unfaithfulness, untrustworthiness, and ultimately do not approve such behavior in any way, shape, or form.
Every guy I know, or in most cases knew; has confessed to cheating on his wife or girlfriend. Not to breech the brotherhood of my fellow man, as I myself have walked that fine line, and for reasons pertaining to my determination to be honest... I had to fight the erge like an alcoholic kicking the habit. (Which I did that too)
Ultimately, I met my wife... o.k., my fiance of 16 years and counting at 19, we've amazing, almost shockingly produced 3 beautiful kids now 15,13, and11.
We've never been swingers, or full blown sluts. We did however make a pact, if we desire something else... we'd be honest about our fantasies (and many remained or remain just that),but we discuss them openly, honestly, and without barriers or fear...and if the threat towards our family is non-evident, or damaging towards our friendship... then and only then do we grant one another a free pass.
Personally, some might say that is wrong, and you know what... I couldn't care less, as we've both explored in moderation, and had extra-marital affairs.
Before this goes from a r-rated answer to and x-rated answer, I'll simply say, we have ~0~ regrets, and a great relationship still. While everyone else we grew up with or knew, tried to move in on us, and we simply sat back, let each other know just how pathetic friends can be behind ones back, and knew...
None of them would last in their own relationships, and didn't. We always avoided the temptation with what we considered level 1 friends. As friendship always outweighs sex, as does honesty, and loyalty to oneself, and each other.
Now, I don't recommend our approach for everyone as there are psychological factors, as well as health fears concerning cleanliness, safety, and disease, which we've successfully avoided in the few brief encounters we've had.
Again, it's not for the faint of heart or feeble minded, but if you are as grounded as we are, then it beats cheating!
They say to each their own. I say to each be honest, and the truth will set you free! Depravity is no better than cheating!
Is it right? ~I'll let ya know when I'm dead.
In absolution I love my wife & she loves me. I cannot, nor will not lie to her, nor deprive her of living her fantasies. In the beginning I was typically over-protective, a touch jealous, as was she.
Let me tell you, I hope to never have that fear ever again, as it causes people to cheat, makes people suspicious, and destroys potentially life ling friendships, and marriages.
I can feel the heat on my feet now, as my fellow Christians will likely attempt to pass judgment, and stone me, screaming; "Adultery...Adultery"
I'll let God decide!