New research, released Tuesday, discovered a dose oxytocin could help protect monogamous relationships, LA Times reports.
The research showed that men in monogamous relationships given the hormone oxytocin will stand farther away from women they have just met.
The "love hormone" oxytocin has been found to increase bonding in parents and children at birth, increase trust, and reduce conflict between couples.
Researchers said that until now, there had been no connection between oxytocin levels and the maintenance of a relationship.
The research also suggests that oxytocin makes people more empathetic and attuned to social cues, which makes the men in the study act accordingly and stand farther away from women when they are in a relationship.