My advice to these cheating men: Try to find a way home; find yourself again.
But it doesn't change the fact that the affair is wrong.
And now, the worst part: He's worried if he stops the affair, not only will he miss The Other Woman, he'll also miss the way he felt about himself when he was with her: bold, daring, confident, risk-taking, strong, Alpha, fearless, decisive, seductive, and happy.
Most countries that permit polygamy are Muslim-majority countries in which polygyny is the only form permitted.
Polyandry is illegal in virtually every state of the world.
He'll regret what he's doing to his wife, his kids and himself.
He may try to reclaim his honor and integrity, but he'll also feel a level of shame that he never thought was possible, and it will haunt him, whether he admits it or not.
If you do a simple comparison, the previous statement reads like a stereotypical drug addict: happiest on the drug, wishing he could be on it, and destroying his entire life because of it.
Allow me to reiterate: If he doesn't already, he'll regret his actions.
Moreover, his dissatisfaction isn't necessarily a deal-breaker for an established relationship. Maybe he did discuss those issues with his wife, but perhaps his version of "discussed" meant he "screamed at her over and over and over and over again" while fighting off endless-but-completely-accurate assumptions that he was disconnecting from her and possibly seeing someone behind her back.