It wouldn't have made any difference if I were "cool" or not with my girlfriend/wife "talking to random nikkas on the side" because based on your scenario, I wouldn't have known anyway. So this is really a moot point. This also goes back to my previous theory (which you probably didn't read) that relationships are basically flawed concepts built on blind trust & faith. Therefore regardless of your own good intentions or actions to maintain the union positively, you don't ever really know what the other person is doing or if they're living up to requirements set within the relationship.
Nonsense. Having a few arbitrary, amicable, friendly, non sexual conversations with women isn't considered or in no way cheating or an affair.
Meh, here today, gone tomorrow. Sometimes even the best of relationships eventually fail. Which is why that divorce & cheating spouses statistics are at a all time high, while traditional marriage & child birth for Americans is at it's lowest. Not to mention the advent widespread technology of being able to meet people via online dating, high STD rates, etc the landscape of traditional dating or relationships for better or worse have changed & so have the rules.