Now, I really don't condone somebody just ASSUMING that people are crazy. You see, most of the problems people have when dating somebody from another culture are just as much due to your own personal quirks (which you think are acceptable because they're normal in YOUR culture) as they are anything else. Very rarely is it due to the fact that the other person is certifiably crazy (although that can happen from time to time as well).
In MY experience, Peruvian women are about a 1000 times more emotionally stable (not to mention reasonable) than American women...actually it's probably more like a billion times, or a number so big that you can't even fathom it. Furthermore, Peruvian women are actually interested in making a relationship work IN ADDITION TO having a career, being a parent, and growing as a human being. This is in contrast to the anti-male state of America in which you can't say your wife wants to be a mother without having seven feminists groups attack you as being another raging example of the ever-present male oppressor who keeps all women barefoot and pregnant. Basically, any comment that any American male makes regarding American women is just instantly dismissed as coated in flagrant sexism...which is a sad barometer of the state of bigotry that exists in the US...but I digress.
So, what I'm getting at is to say no, Peruvian women aren't crazy. However, if you've been trained as an American male, you look at situations a certain way, and since female response isn't UNIVERSAL (that is, it varies by country), you might misinterpret how a Peruvian woman will react to certain things (assuming you were expecting a American woman's reaction).
A brief example of what I'm talking about can be seen in a discussion I had with a few Peruvian girls who thought the concept of Alimony was extremely sexist. "Women can take care of themselves," they said angrilly, "why would the STATE insist some guy support them? That's absurd."
They really said that, but try using that same argument back stateside (if you could get a woman to say it, it might be considered, if a man said it, it would be instantly dismissed).
Peruvian women WANT you to do various things for them that American women don't. One of these things is to engage in a dialogue as an equal rather than just be a subservient cur. Also, don't make a bunch of self-depricating jokes which reflect poorly on masculinity ("typical male, can't stop and ask directions"), Peruvian women get PISSED if you sulk around with some bullshit, "poor me," attitude (which is just the kick in the ass most guys need).
I think the main thing, though, is that in an argument, you have to stand your ground (and these arguments are going to get LOUD). That being said, don't pick any old stupid fight over any old stupid thing. But if it's something really, really important, the type of thing that you simply CAN'T endure living with, you have to stand your ground. Obviously, you can't use violence (which in this type of situation doesn't work anyway), so the trick is to somehow establish the power of your barganing position and make your partner take you seriously. Both men and women have to do this eventually in their relationship, and really, your relationship is like your "training camp" where your coach gets you into shape. When you go throughout the rest of the day, hopefully you're prepared to recognize what is fair treatment, not take it when it isn't present, and have the strength to back up your position.
The thing that's in your favor with Peruvian women is that, unlike American women, they actually want to have a functional relationship and are willing to work to make it happen. Sooner or later they'll stop "seeing red" (only if your position is inherently reasonable I might add), and come forward willing to negotiate. Sometimes, this takes a separation of a day or two, and those can be hard to hold out through, but you have to do it.
However, if you let somebody push you around (like you've been trained to do by American Media and TV...the "official" ideal American man is like that wimpy kid who stars opposite Jack Black in "Year One"...although in real life, American women hate that guy too), and you tolerate a bunch of behaviors you secretly can't stand, you deserve to be miserable and not have anybody respect you.
Look, it's fairly easy. When you don't like some sort of behavior:
1. Say, "I don't like this" and explain it calmly.
2. If the person is dismissive, say, "then the relationship is over."
You just can't be around people who don't take you seriously when you say something makes you feel bad. The trick is to be very strict on this point, but also always willing to forgive when somebody shows genuine remorse. Also, people appreciate you more when you are vocal on things that are ruining not just your relationship with them, but their relationship with everyone else. Lastly, it's also up to this person to point out the things that you do which are wrong, and you have to also be willing to hear them.
There you go.