men

I think for some, it might be that they have already given thier best impression at the start. That was thier top, it's all a measure of gravity from there. Can't be better than ones best and keeping up that act is just to strenuous. I mean they wanted the girl so much they ran the race to win. But a man wants to be himself, and they gradually ease back to thier comfort zone. Not all guys the same, some maybe feel they made the desired accomplishment and thats as good as it gets, before any problems can arise give up before they start. Then some are just users or ungrateful. But there are good people out there no matter if they are a man or not.

This question is very easy. It is the lack of oxytocin. Oxytocin is the hormone our body makes that gives us the ability to be close to people. When we first meet someone we have high levels of oxytocin towards that person. As we continue to be around them the oxytocin decreases. Look it up it is actually pretty interesting. So when someone cheats it is usually because their oxytocin levels are higher with someone else.