If you're in college, or you ever went to college, you're familiar with a phenomenon that's known widely today as "hook up culture:" the Western tradition of getting together for quick flings and casual intimacy with your friends.
The way it's supposed to work is, you go out and get drunk, and you wake up the next day with some girl you're friends with. The two of you smile and laugh about it and then go about your lives as if nothing had happened. Or, perhaps, you hold a late night study session, and then the night goes a little later than either of you expected, and you end up in one another's arms. And then, the next day, maybe it's a little awkward, but again, you smile and laugh about it and shrug it off and it's on to the next one.
But there's a problem with this idea of hook up culture, and it's a problem that drives lots of men crazy pulling their hair out and throwing monkey wrenches into their own efforts to bring women into their lives.
The problem is, hooking up with friends is that it doesn't quite work as advertised. In fact, more often than not, it doesn't work at all.