If your boyfriend can't pass this test, he might be too dumb for you.

According to recent research, the smarter your boyfriend is, the better he’ll treat you. Who would’ve guessed?

A study published in the journal Personality and Individual Differences found that men’s general intelligence is associated with their partner-directed behaviors in heterosexual relationships.

The research analyzed data from over 200 heterosexual, partnered men (ages 18-65) to explore the associations between men’s intelligence and how they show up in romantic relationships. For example, they analyzed “partner-directed insults, desire for power in intimate relationships, and erectile dysfunction.”

The results weren’t shocking—but they highlighted the importance of both general and fluid intelligence within relationships.

Your Boyfriend Might Be Too Dumb to Be a Good Partner, Study Finds

In the study, participants received a series of letters and numbers and were asked to provide the next in the sequence. This is known as the “Letter and Number Series” and was just one of many tests involved in the research.