Sex chemistry 'lasts two years'
"Couples should not worry when the first flush of passion dims - scientists have identified the hormone changes which cause the switch from lust to cuddles.
A team from the University of Pisa in Italy found the bodily chemistry which makes people sexually attractive to new partners lasts, at most, two years.
When couples move into a "stable relationship" phase, other hormones take over, Chemistry World reports.
But one psychologist warned the hormone shift is wrongly seen as negative.
Dr Petra Boynton, of the British Psychological Society, said there was a danger people might feel they should take hormone supplements to make them feel the initial rush of lust once more";
Full story;
BBC NEWS | Health | Sex chemistry 'lasts two years'
It makes sense, but i wonder what the purposes of these hormones are in our evolution- obviously the initial sexual lust hormones of the initial stages of the relationship are probably there so the couple has lots of sex and so have babies together, but why exactly these lust hormones run out is still not that well understood. Perhaps they are there to move aside for the hormones which create stronger and more lasting bonds between the couple for the raising of the children?
Either way though, it does for once and for all stop all these debates about people/couples only being evolved to stay together for a few years etc- if that were really the case, then why are these secondary hormones kicking in after the lust ones, which make the couple stay together for longer?
I have to admit, that i no longer feel the same type of passion over my guy as i did years ago, however its more like the feelings have been replaced by other feelings which are still just as good- i love him deeply and he loves me back, we trust each other and enjoy each others company and have great sex together etc. We have a very meaningful, enjoyable and passionate relationship together

.
I've noticed that with a lot of my friends though, their relationships with other people have rarely lasted more than 2years- when i go to comfort my recently dumped unhappy friends and ask them what happened, its usually either disagreements between the ex-couple and unreasonable behavior that broke them up, or also quite commonly its "the passion between us just seemed to dwindle over time and we no longer felt the same passion about each other etc" scenario that caused the couple to break up.
I think the "passion between us just seemed to dwindle over time" may in part be these changes of hormones taking place, and i think that if the couple didn't have that much in common other than having good sex together, or didn't understand each other well or weren't that loyal etc, then once the constant 24/7 lust for sex is not as strong as it used to be, then there isn't that much to keep the couple together etc. I think such times are a trial for the relationship, make or break time, and a lot of relationships are not strong enough to continue after these change of hormones.
But i wonder why this has to be...
Many people cheat on their partners because the lust has gone in their current relationship, and new powerful lust has been sparker towards a new person of desire. The person cheating may hope to re-live that passion that they once had with their old partner, but in the hope things will work out better with their new lover.
But if we're all programed the more or less same with these hormones, this cycle would only continuously repeat itself, no matter who we went with, so we would be forever stuck in a cycle of never having a perfect long-lasting and happy relationship with anyone etc. How cruel is that? Why is this to be so?
The only reason why i can think that we have this hormone programming for is so that it makes us move from partner to partner, spreading our genetic material around more or something like that. But in a civilized sense, surely that would be for our society? Our societies success is so strongly built on stable relationships, and i'm not just talking about sexual ones, our civilization is only possible because we stick together and are not solitary animals, we benefit from sticking together in the long term.
So my main conclusion from this right now is that we are still very much in the process of evolution, and we are still very much evolving to stay passionately sexually attracted to our partners for longer periods of time- it would make more sense for us to be evolving this ability more rather than de-evolving it. One thing i have noticed, is that the more solitary an animal is, the more fleeting its relationship is with its lover (take Deer for example, sex for them last for a few seconds and then thats it, relationship over, and the deer part and go their separate ways- our relationships must seem to last a life time in the eye's of a deer)- in the animal kingdom, we actually have very long relationships and long sex in comparison to a lot of other animals.
Anyhoo, i'll stop musing this over for now. What are your opinions/feelings on all of this

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