Researchers Sandra Langeslag from the University of Missouri-St. Louis and Jan van Strien from Erasmus University Rotterdam found evidence of "love regulation" while conducting a study that was, per Langeslag, the first of its kind. In other words, you can help how you feel about someone.
"Love feelings can be more intense than desired (e.g., after a break-up) or less intense than desired (e.g., in long-term relationships)," writes Langeslag in an abstract for the study. "If only we could control our love feelings!" Langeslag might have found evidence that you can.
But here's the thing — the brain measurements of participants showed that the feelings weren't all in the participants' heads. Or, rather, they were. The Late Positive Potential brainwave, an indicator of "how emotionally salient a stimulus is for you,” was up after up-regulation and down after down-regulation.