I guess I can see where they are coming from. They don't want to really give up, they want to see if the grass is really greener and/or they just want to play with still having the spouse in reserve. It's risk free. In my book it's not OK. I am by no means a prude, but if you're married you don't date. Plain and simple. In addition, I can't see wanting to date while still married. Good God, our lives are confusing and complicated enough. Why bring a third party into it to screw it up some more?
Me: 42/H: 37 T: 10 years/M: 8 D9, S8 Bomb: 7.23.07 Separated: 1.20.08 D Final 3.19.09 Affair started in '05, found out parts in 11/07. They married 11.26.09