When we look at someone for the first time, within the first 7 seconds (maybe even less!) something occurs and by the end of that briefest of exposures, we either fancy them or we don’t. This can of course change over time. We might not notice someone but over time come to know them better and then a romantic or sexual desire for them can arise. There are exceptions to the 7-second rule… but in the context of finding a fuck buddy, hook up or a friends with benefits, generally that first impression can make a really big difference. If it is there, the immediate interaction afterwards can...