Friends with benefits can and does work, but only under specific conditions. Research from a longitudinal study published in the Journal of Sex Research found that 40% of people who wanted their FWB arrangement to continue were still in one a year later, while 59% of those who wanted to go back to being just friends managed it successfully. The arrangements that fail tend to share one common trait: both people did not communicate clearly about what they wanted from the start. So the real question is not whether FWB works in general, but whether it can work for you, given your expectations...