The number of couples posting cheesy photos to Facebook can probably only be matched by the number of people who find cheesy photos of couples on social media really annoying.
But a study from Cyberpsychology, Behavior, and Social Networking magazin, shows that posting those cheesy photos to Facebook actually increases the odds for a couple to stay together. The study checked how couples interaction on Facebook impacted the time they stayed in the “in a relationship” on Facebook. (Actually, the more accurate description was if posting more joint photos, statuses and writing on each other’s walls increases the likelihood of staying together after 6 months).
This is interesting, so the researcher speculated on the why. Public Commitment Theory suggests that the more committed you seem, the more committed you are. The author, Catalina Toma, PhD, an assistant professor of communication science at the University of Wisconsin-Madison, speculates the reasons to Yahoo Health: