While being in love feels awesome, a new study says that all that romance can also make you behave more like a jerk towards good-looking members of the same sex.

In the study, researchers from Florida State University surveyed 130 people in long-term relationships. Participants were asked to write a short essay about either their love for their partner, sex, or a neutral topic. They were then asked to critique photos of attractive members of the same sex.

The findings showed that those who wrote about love rated those images twice as negatively than people who had just thought about sex. The researchers explain why this is so:
“Sex is really about the short-term, but love is about long-term planning and commitment, so you’re sensitized to all the people out there in the world who could at some point encroach on your relationship,” says study author Jon Maner, Ph.D., a psychology professor at FSU.
What this basically means is that your tendency to lash out at your guy friends can be triggered from being jealous and in love. People who are insecure in their relationships are more likely to feel this kind of jealous rage.  The best way to avoid this is to go through little spats and conflicts that every lovestruck couple faces, and make sure to compromise in disputes so that resentment doesn’t fester into worry about infidelity.