At a superficial level, sexual jealousy is arguably
one of the most counterproductive emotions we have evolved to
experience. Think
of all the hours we humans waste pining over stolen partners or
unrequited love,
not to mention the devastation caused by crimes of passion. Plus, from
an evolutionary perspective, surely more people having sex would mean
more people, period. So why do we get so upset over what someone else does with their naughty bits?
-Vice