Insecurity,men are just big boys or dogs.You have to Tell'us atta boy every so often or we begin to feel insecure.I know I do.Then I consider finding someone to get attention from.Sorry these are the facts 'mam. Ps You didn't mention if you went and got all fat in the 13 years.That will do it to.

There is nothing wrong with you, my dear. you were just married to a jerk, who managed to string you along for years. I was married to one too, who kept telling me for years how much he loved me and then when we separated he said that he never really loved me, he just married me out of a feeling of 'duty and obligation' - and no I wasn't pregnant. It was just an excuse, of course, but it hurts when you hear it. As for why? I could write a whole book to explain, and I don't have time to do that, but I do know this - men (and women) will say just about anything at the time of separation to deflect blame from themselves, so don't believe anything they say until at least a year later and even then, you'll never know the whole truth. Immaturity and self-centeredness, I think. Even if the marriage is unsalvageable, there is no reason for the departing spouse to be cruel to the one left behind, but they are usually so self-absorbed that they make no effort to soften the blow by at least giving you some hint that they have been dissatisfied and making some effort to constructively repair the relationship before they pursue their own pleasure with someone new, and sometimes younger. Don't blame yourself, either. Just remember, Brad Pitt left Jennifer Aniston and she was JENNIFER ANISTON, for goodness sakes. And she didn't 'get fat and let herself go', did she????

i never got fat no........i am 5'9 and only 106lbs, i looked after my kids my husband the finances, the home ect ect and he was the one that pushed me away sexually i gave him the world plus anything he asked for so it was a huge shock,when he started accusing me of cheating on him and a bunch of other things.I have tight abs, diamond calves and very much in shape, and long long flowing curls and dark complexion.he actually left me for a fat chick who gave him herpes.

Men are afraid of aging and hooking-up with a younger female, naturally makes the man feel younger.

Personally, I dont know why men think they have to have a younger woman. I want a mature woman my own age or within 7-8 years of my age. I was married to my wife for 14 years before she died and she gained about 80lbs during that time, but I LOVED her.(No she didnt die because she was overweight) So it didnt make any difference what was on the outside, we loved each other and that was that. People are too caught up in the media hype about every one has to be perfectly toned and slim and trim to be attractive and that just isnt true. I believe if a man leaves his wife for outside sexual activity, then he just doesnt love her. If he did he would not want to hurt her by breaking his vows. And that goes the other way too. If she loved him, she would not go outside the marriage for sexual activity. So, in my opinion, the question should be, why did he quit loving me? edit: Well, you may be right, you know him better than I do. And I know that if Kim had caught me, I would be trying to justify it, 'cause she would have been beating me severly about the head and shoulders! LOL!

There is much more to a woman (or a man) than looks. Fat came up in a few of the other answers...Character and personality are what counts...As far as cheating is concerned, I don't believe that man was made to be with one mate his whole life and I never blame a man (or a woman) who strays. It's not important. It's in our biology. One mate for 50 years? Are you mad?

Your husband has cheated on you because you are not fullfilling his emotional and/or physical needs. This other woman is. You and your husband need to communicate your needs and be honest so that he or you won't be tempted again. I found a real good website called "marriage builders.com". You can read all about infidelity and why people have affairs. Your marriage will survive. It takes a long time. To discover that your spouse is having an affair is very traumatic. It is one of the worst things a spouse can do to another. You will get over it, but never forget it. Good Luck!

he did it because he was too selfish to stand by the committment he had made.

let just make things easy, he cheated on you is it beacuse he doesnt Love you anymore,and he want someone young atractive girl who he can make him fall in love again.

I'm going to go with midlife crisis, which in turn is insecurity. Something in him is obviously effed up beyond belief.

Your question should only be, why do guys cheat? Younger women, older women, really makes no difference to you, does it? My girlfriend is 20 years younger than me, just makes my cheating at a young age convient. If a guy cheats age means nothing, it is just there, age means nothing, we are dogs and if we want to cheat will take whatever, only upside is that just because we cheat, doesn't mean we want to change being with you, just means we got lucky, life goes on, you can't do it, just me!

It's everything in his life - including you...or maybe not...depends. Curious - have you looked in the mirror? Did you try everything you could (no possibly - possibly is a sell out word) to maintain/enhance that spark in your marriage? New sex moves? Keep up a good diet? Stop nagging him? Look good? Smell good? Gentle/caring/a non-bitch? ...........probably not. However, if you've DONE EVERYTHING YOU COULD DO TO DO ALL THESE THINGS AND THEN SOME.......don't ask this question - this question is a waste of YOUR time. Move on or stay (if you care about your financial stability) and lead your OWN life....a life that is fulfilling to you....a life that puts a smile on your face and gives you ENERGY! So, there's your answer.

Stupidity.

Sex is sex, if were offered sex, most men will accept. It's natural human instinct, sadly most men don't know control. I would suggest you kick him in the balls.

It is neither chemical imbalance nor is it insecurity. Men just weren't meant to be with one woman. Face it. Live with it. Learn to love men for what we are. I do not exclude woman from my dictum. Women, although somewhat less inclined, may also need multiple relationships. Life is interesting unless you're stuck in a prison. P.

I think its because (this what my boyfriend says): the pussy is tighter they are in better shape and there is no strings...

Insecurity on the man's part. He wants to convince himself that he's still 'got what it takes.' It's a ego thing blended with an emotional reaction to getting older.

Some men cheat because they are sociopathic bastards. Some women cheat because they are sociopathic bitches. Men cheat with younger women because, well, most men prefer younger women in general.

Stupidity.

wow this seems three years late but this issue is important. Men cheat for sexual gratification, men cheat because they fall in love, and in true love there is no cheating. True love is mature and recognizes there is no room for infidelity and we must adapt to counteract nature in order to make the woman we swore to commit to emotionally happy and secure. Everyone gets crushes! Deal with it, we're not in sixth grade anymore. If you do cheat, she must never know and you must look within yourself to become a better man. If not, don't get married! If you believe faithfulness is impossible, DON'T GET MARRIED!!!! I have cheated in the past and I have been faithful in the past and I know the temptation can be resisted. Remember, if he or she cheats, he or she is not worth being with. He/she should have least had the wherewithal to have kept it a secret, recognized there was a serious marraige issue, and fixed it. Every idiot who says men are animals or dogs blah blah blah excuse excuse never grew up and aren't mature enough to be in a relationship. The irony is they probably got cheated on by a similarly immature woman and have given up on true love.

there are many reasons, to name just a few.. unfulfillment( sexually and emotionally ), uncaring and unsupporting spouse, no respect from spouse, constant nagging from spouse, cold sex from spouse, constant put downs from spouse and many more

There was a problem or void in the relationship that was filled by the younger woman. Certainly, it's wrong and there's an element of selfishness, etc. but if you deconstruct your relationship, you will discover telltale signs of discontent.

So you are tarring every man with the same brush? I'm sorry your man cheated on you (Cause I presume that's why you are asking the question) but he was obviously an a**hole. Not every man is the same - some wait 30 years before having an affair with a younger woman ! I'm sorry for your pain xxx

Can you blame the guy?

I don't think it has anything to do with the age of the person he's cheating with. He's just being very selfish and uncaring. He would be absolutely wrong.

are you kidding because your relationship was boring and young girls have no problem taking your husband younger woman can make a man feel manly he won't have the relationship that he has with you but maybe he doesn't want that does that mean he should treat you like crap no but don't be surprised everything in our society has sexual ennuendo