When is the right time to....

call it quits in a relationship?

Some of my closest friends have been in long term relationships and have cheated on their significant others-sometimes on more than one occassion with different people. Should they have called it quits before they cheated? What caused them to cheat? How do we know when is the right time?

Should you do it if you are having fights? Fights-no one likes em but they are inevitable because of human nature. Everyone gets on everyone elses nerves once in a while. Everyone has their own opinion. So should you break up with someone because of fighting?

Should you do it if you want to cheat? If you are with someone, then shouldn't it be enough to be just with that ONE? Why is it that you would need another? And no I'm not talking about looking-everyone is human and if they see a good looking person, they can look. It is when one goes beyond the looking that we step over that fine line.

Should you do it if there isn't a chance of a future? Not that I'm saying that you have to be seeing wedding bells, but having some thoughts of at least some minute future with the person your with should be there. Even if it is you seeing a commercial for a movie and thinking about going to see it with your significant other once it comes out. Of course as time goes on in the relationship, I would hope it would get to be on more serious thoughts!

So anyone have an answer?....