This debate somewhat ruffles my feathers as I read some of the responses and comments.

First let me tell you where I am coming from. In my experience, I have seen many more women cheat on their husbands, boyfriends or significant other than I have seen men cheat on their wives, girlfriends or significant others. I noticed the numbers that amore01 posted and yes, I would agree that those numbers were once agreed on but as times have changed the percentages of increased in women being the one to cheat and they have exceeded the percentage of men cheating.

That being said, you ask will all or most men cheat on their significant other, I would have to disagree as there are many men that value their morals and even when presented a chance to cheat, they would not. Just as there are many women that value their morals and would not cheat if given the chance.

I was cheated on and after she accused me enough times, I began to notice things that began to prove that she, in fact, was cheating on my and blaming me so she could validate why she was doing what she was. By the way, I am a man who values my morals.

 I don't believe *every* man cheats any more than I believe *every* woman cheats.

To pull in a cheap shot ... If one believes Christ was a man, does that mean that one must believe He cheated or was only prevented from cheating by being crucified? Ew!

 Have to oppose here. Not every, but statistically, most men do cheat. It is likely that currently most women also cheat. There are a number of sites with statistics and many studies have been done (of varying credibility). Overall, of the more credible studies (non-media/magazine studies), it appears that the number of women who 'cheat' has also increased in the last year to rival the 60% figure for men.

Here's some information that demonstrates why it is easy to be cynical about fidelity, in general:

According to Peggy Vaughan, author of "The Monogamy Myth," first published in 1989 by Newmarket Press (third edition published 2003),
Conservative infidelity statistics estimate that "60 percent of men and 40 percent of women will have an extramarital affair. These figures are even more significant when we consider the total number of marriages involved, since it's unlikely that all the men and women having affairs happen to be married to each other. If even half of the women having affairs (or 20 percent) are married to men not included in the 60 percent having affairs, then at least one partner will have an affair in approximately 80 percent of all marriages. With this many marriages affected, it's unreasonable to think affairs are due only to the failures and shortcomings of individual husbands or wives."

Ok, this was published in 1989, which means the data is older than that, yet, I would reason that social pressures about fidelity are even less than 19 years ago, so the figures of infidelity have likely increased.

Additionally, these statistics/estimates are assuming all individuals have been honest in admitting infidelity. It's seems likely that a good number of those men and women who are cheating do not feel comfortable admitting it in a survey.

This is discouraging news, and I understand your cynicism. Yet worst case, about 40% of people do not cheat. I hope you find yourself and mate among them.

 Not every man cheats.There are some men who are real and will not cheat on their woman.

 No, not every man cheats. I do not and have never cheated on my wife and I know a lot of men who have never cheated on their wives. Always remember, to cheat it also takes a woman so if all men cheat, maybe all women cheat too????

 I find myself totally against this...why would you generalize with a subject like this? Not all men cheat. I hope find someone with outstanding morals who will be true to you. That man does exist.

 I think it just depends on the person at hand. I mean-it DOES seem that lots of guys cheat (maybe they think they'll get away with it) I don't know but I don't think you can say EVERY GUY WILL or NOT. It really depends on each person and their own set of morals or opportunity they have at the time. As juliamarie has said-"there ARE some decent one's."

 I don't think they ALL cheat, just most of them! ;o)

 Well considering what you have said that no matter who it is they will inevitably cheat, basically the person that chooses to leave someone if they cheat will never find a man to stay with if they all cheat. I don't think every man will cheat. Probably about 90 percent of them will. However there are some decent ones out there that don't cheat.

 I think it's pretty easy to blame a whole gender simply because of what one person did to you. Just think if we always thought that way? Why stop at men being cheaters? All germans hate jewish people too right? And don't forget that all muslims are terrorists! I think you're trying to find something to be scared about other than the real reason. That being, your afraid to be vulnerable.

 Not everyone cheats. A lot of men cheat, a lot of women cheat. But someone with good moral standards won't cheat.

 No as I know lots who do not cheat and never intend to.

 BULLPUCKY !! I am a man and I am here to tell you that I have NEVER even thought of cheating on my 6 wives or 32 girlfriends. That would be IMMORAL.

 He's never cheated, and he';; never have a reason to.

 I personally have never cheated in my life. I have however had girlfriends who cheated. Bottom line.......real men don't cheat.

 I really take offense at this, and I am a woman. My husband died last year. He was a godly loving Christian husband and daddy and I miss him terribly He never once cheated. It is not true that all men cheat. All men do not cheat.

 I dont think EVERY guy cheats.. Well ok maybe at some point in their lifes. If he truly loves you he wont do anything to ruin your relationship.

 I'm totally against this debate. Not all men cheats. It's just a wrong thinking. There's no evidence.

 I believe that not everyone cheats. I want nothing more than to say that yes all men cheat, my experiences have lead me to believe that, but there is still a part of me that wants to believe that not all men cheat. I myself have cheated more than any of my boyfriends as a way of cheating first and to expect it from the guy as well. I just have to believe that there are honest men out there.

 I dot think so,ive seen more cheating woman than men in F.L. Lol

 I've only been cheated on. I've never cheated, I know the pain.

 There are a lot of men that feel cheating is wrong so they don't do it. Maybe past events made you believe that hopefully someone will change your mind.

 Don't think so. There are plenty of good men out there that would be repulsed by just the thought of it.

 I never cheated. But then again I am only 19.

 To say that "all" men means that this would be inclusive of every man on this earth. I disagree knowing that there are some men out there and women who cheat.

 Not every man cheats, and not every woman cheats. Some are unloyal, some waver, but some actually find respect, love and commitment and would find the idea of cheating unthinkable. One cannot generalise an action and apply it to an entire gender, or an entire group of people.

 I personally haven't cheated on a girlfriend, not even while drunk. Above love, is respect.

 NO not every man cheats. I know lots of men who are true to their mate. If he really loves you then he will not cheat. If you treat him right and love him back he will not cheat.

 I don't believe it. I know many moral and loving men who would never cheat.

 Nope. First of all, it's stupid that people would go out with someone without knowing them well enough to know if they'd cheat on them or not. Second of all, not ALL men cheat. Some men believe that if you have a girlfriend, you don't need another one!

 I think it is so sad that people would go into a relationship already dooming it. I would never cheat (female) I have been cheated on, by hey ho, life goes on. But having said that most of my girlfriends have cheated, yet my male friends haven't. That might tell me statistics but other friends found that more males do. I don't believe that statistics are correct in this scenario. If you cheat you are a lier. So when they get asked have you ever cheated - how many are going to tell the truth!?! If a man or women in a relationship accuses another of cheating continuously statistics show more often then not they are cheating themselves. It is a way of stopping the focus being on themselves. You are so busy dealing with what they are accusing you of you are not aware of the signs. If you enter a relationship already thinking your partner will cheat, it is more then likely it will happen. I also believe there are unresolved issues from past relationships if a person believes this. It is important for peace of mind to enter a new relationship with out any lingering insecurities. Both me and my partner were honest and said we had insecurities from past relationships so we both understand exactly why we are acting in a way with certain situations. And there almost gone!

 I will never believe that "every man cheats"!! You cannot judge all by one man's cheating behaviour! I have been in a relationship for 5 years..and you know what? My boyfriend has never ever thought of anyone else other than me! But very unfortunately, I got derailed and on the influence of someone, sort of cheated him! So girls are no angels...but that doesn't also mean that all girls are bad! There are good and bad in both the genders. So guys alone are not to be blamed!! I won't support it!

 No i don't think every men cheats..sometimes a women can also cheat not only the men should be blamed.

 I don't believe "every" man cheats. There are a great deal of men and women who value fidelity.