The action of going home with a new partner for sexual purposes without leaving afterwards. Through charm and repeated sex, a one-night-stand can be prolonged for a full weekend, and further on through weeks and months. Though it may appear to be "love at first sight," it is actually the exchange of sex for housing.
This sort of "premature cohabitator" is almost always an impoverished female.
I spent about a year in London, camping in various places.