More than a cheesy line from your high school poetry writing class, this phenomenon is actually a thing—as long as you’re really into each other. A study took 32 couples and had them stare at one another for three minutes straight as their heart rates were monitored. Eventually, the heart rates began to sync up. What’s interesting is that it was the women who tended to adjust their heart rates to their partners. Researchers speculated that stronger ability for empathy could have been behind the trend. Now if only you and your significant other could sync up who does the dishes.