> Chances are that if the employee said 'no', then the wife would've found somebody else to sleep with.
So your argument is that because there is someone out there with no integrity, it makes it alright for him to act without integrity? And that should not affect his work relationship with his boss?
> The wife was the one who took a vow to remain faithful, not the employee.
If we really value honesty and loyalty, then we cannot excuse him for going behind his boss's back and helping his wife break her marriage vows. If keeping your promises is something we value, then we cannot excuse him for actively helping someone break one of the most important promises in their life.
The wife is definitely at fault, but if you value honesty and trustworthiness then the employee was at indisputably at fault too. I find it mind boggling that people would stand up for this guy.