In the first part, they do it her way, or more like all the crazy stuff that passes through her mind. It starts with a simple restaurant bill, and ends up all the way up to drugs and stealing loads of money, which ends up with them busted.
Second, it's the guy doing all the crazy stuff he wants, and from what I saw, he was always being a prick, trying to have sex and keeping the girl only for himself. Always drunk and fucked up, missthreating the girl. Everyone ends up hating him, including the girl, who finally kills him.
Lastly, it's somehow the opposite of the second part. The guy decides to not to anything bad and be a nice guy. At first, like any relationship, she finds it cute and likes the respect. Soon though, she gets the need of action and thrill, but the guy never follows her and tries to stop her every time. From her face, you can see how she finds him boring and lame, and finally she gets enough of all the crap and kills him when he was about to give her out to the cops.
Somehow paradoxical how following the girl and not following the girl (#1 and #3) both lead him to the cops. Also, being a bad guy and being a good guy (#2 and #3) both lead to his death.
It's show very well the extremes of personal behavior. If you're too nice, people will find you boring, and if you're too crazy, you will get in trouble. Always have to find the equilibrium, but it's not as easy as it seems.
^ I blame my short-story English class for that, although it was still quite a short analysis
Sadly the people in the comments still believe copying is theft no matter how plainly one puts it. If they had a fucking brain it just refutes the retarded argument that copying is stealing when it's not, it's just another concept. This video doesn't justify piracy or anything. But if one prints a book and it gets stolen that specific book would need to be reprinted (which actually costs real money) to be replaced. You lost profit. If someone who wouldn't buy it anyways downloads it, that copy on the shelf is still there and has no need to be reprinted. People are so fucking stupid sometimes.