(CNN) - How would you feel if your partner got a promotion, won an award or reached some high goal, and you did not?
According to a new study, it seems that men might feel worse about it than women.
A new study in a journal from the American Psychological Association looked at nearly 900 people in the U.S. and the Netherlands.
It's probably not a big surprise that a man might feel threatened if his girlfriend or wife outperforms him if they're competing directly against each other.
But this study found that men automatically felt worse about themselves when they thought their female partner was doing better.
In other words, the men in the study saw their partner's success as their own failure and suffered bruised egos.
The study says women did not feel worse about themselves if their male partners succeeded or better about themselves if their men lagged behind them.
Copyright 2013 CNN. All rights reserved.