Do It For the Species

A new study of fruit flies in the UK has implications for all animals, including humans. Apparently females having sex with multiple partners benefits the species.

promiscuous females of a species may be the key to that species' survival. ... The reason is that when females partner with fewer mates, the likelihood that they'll have all-female broods rises.

So the next time someone starts to turn you down, remember to point out that the survival of the species may be at stake.