I would presume we are talking about a one-night stand situation here?  In that case, ALL the participants are losers unless, in the rare case, the participants in the conjugal act actually do fall in love and marry, and live happily ever after.  But those cases are rare indeed.  95+% of the time the participants have cheapened themselves, set themselves up for emotional trauma, and perhaps even venereal disease.  They can be heading into a downward spiral that can lead to great sadness and even serious depression, if they continue to seek out one-night stands.

Not trying to be preachy and overly judgmental here, but no two people who aren't DEEPLY committed should never have sex.  Their lives (and those of the possible unborn they create) are too valuable for that.