I don't know. Its not just about sex I think.
It's interesting that we often say it's not about sex, even though the primary reason for the jealousy (especially the violent type) is "my partner had sex with someone else". Seems like a contradiction. Sure, people don't like the lying part of it, but people lie to each other in plenty of other things. But only primarily when sex is involved does it elevate people to the level of violent rage.
People get mad at other lies in a relationship, I agree, but rarely do things become as dramatic as they do when it comes to sex.
Its biological for sure as it can be uncontrollable. I think humans have always survived based on their family unit. It is the most important aspect to many peoples lives. We raise our young for 18ish years. It requires commitment and trust.
But according to most people, it's not just "commitment" that's important. It's
sexual commitment. After all, this is usually in the context of sexually monogamous relationships.
Since most people don't pursue open relationships, and lots of people instantly get divorced/break up after sexual flings, it does seem that sexual commitment overrides all the other types of bonds in a relationship. That's the part that always seems weird to me (especially when we simultaneously claim that "there are more important things in a relationship than just sex")
As for labeling it sexual jealousy I don't think 'I have a new mate and I want you out of the picture' can be defined as jealous.
I guess I wonder why the immediate assumption when it comes to infidelity is that they "want you out of the picture". I mean, sure, someone
could very well want you out of the picture, and that obviously does happen, but that can happen with or without an affair.
I suppose I'm always curious as to why
sexual betrayal is the one thing we "understand" violent jealousy and anger with. When other types of betrayal don't inspire the same feelings.
Spring-Loaded said:
So this drive to get one's genetic code to"win," and keep a mate is inherent to most life forms. I'd imagine that latent instinct is still pretty powerful/
Then of course we have the society's notion a man's value is determined by sexual/romantic prowess, which can be undermined by infidelity. It's common for people to judge the cheatee as being weak/inferior to the cheater. It seems like a "chicken or the egg," situation.
Heh, I kinda agree. I think that notion of "possession" in a monogamous relationship (not literal possession, but often hinted at when it comes to sexuality) and masculinity is what often amps up these types of situations
"Why you messing with
my man/woman!?"