Facebook might understand your romantic prospects better than you do.

In a blog post published yesterday, the company’s team of data scientists announced that statistical evidence hints at budding relationships before the relationships start.

As couples become couples, Facebook data scientist Carlos Diuk writes, the two people enter a period of courtship, during which timeline posts increase. After the couple makes it official, their posts on each others’ walls decrease—presumably because the happy two are spending more time together.

In the post on Facebook’s data science blog, Diuk gives hard numbers:

During the 100 days before the relationship starts, we observe a slow but steady increase in the number of timeline posts shared between the future couple. When the relationship starts ("day 0"), posts begin to decrease. We observe a peak of 1.67 posts per day 12 days before the relationship begins, and a lowest point of 1.53 posts per day 85 days into the relationship. Presumably, couples decide to spend more time together, courtship is off, and online interactions give way to more interactions in the physical world.

You can see these data in the chart above. The number of wall posts climbs and climbs—until it tumbles when things become official.