Though 27% of Facebook users don't list their relationship status at all, only about half of those people are single, according to a Men's Health article. If you're one of these users committing the crime of omission, Facebook's team of "in-house sociologists" has been researching ways to find you out.
As reported by the MIT Technology Review, new research by Facebook and Cornell University has found that, given all the connections among a person’s friends, it can be recognized who a user's romantic partner is from the network structure alone.
"Many individuals have large clusters of friends corresponding to well-defined foci of interaction in their lives, such as their cluster of co-workers or the cluster of people with whom they attended college," the report states. "Since many people within these clusters know each other, the clusters contain links of very high embeddedness...In contrast, the links to a person’s relationship partner or other closest friends may have lower embeddedness, but they will often involve mutual neighbors from several different foci."
- Social & Online Media