The queen ant is the only ant allowed to reproduce. The others are forced to remain celibate and work for the good of all.
All ants that are caught in the act, or even thinking about the act, are attacked by the other ants.
Apparently, an ant that is feeling romantic emits an odor that is easily detectable by the other ants. The scientists that conducted this experiment actually dabbed a bit of the aroma on some unsuspecting ants and then placed them back inside the colony, and they were attacked.
The only time the ant colony experiences "free love" is when the queen ant dies.
"The idea that social harmony is dependent on strict systems to prevent and punish cheating seems to apply to most successful societies," Liebig explained in a comment released with his paper. Regardless of the genome, in matters of sex, nature still appears to prefer us not to stray.
Read the full story at Time.com.