Partnerships are increasingly seen through the prism of promises and expectations, and as a kind of product for consumers: satisfaction on the spot, and if not fully satisfied, return the product to the shop or replace it with a new and improved one! You don't, after all, stick to your car, or computer, or iPod, when better ones appear.
In a liquid modern life there are no permanent bonds, and any that we take up for a time must be tied loosely so that they can be untied again, as quickly and as effortlessly as possible, when circumstances change - as they surely will in our liquid modern society, over and over again.
Capitalism proceeds through creative destruction. What is created is capitalism in a 'new and improved' form - and what is destroyed is self-sustaining capacity, livelihood and dignity of its innumerable and multiplied 'host organisms' into which all of us are drawn/seduced one way or another.
We live in a world of communication - everyone gets information about everyone else. There is universal comparison and you don't just compare yourself with the people next door, you compare yourself to people all over the world and with what is being presented as the decent, proper and dignified life. It's the crime of humiliation.