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Facebook’s data team is going all OkCupid on us in terms of releasing relationship data about their users. OkCupid does a great job measuring a few million singles, but Facebook super-sizes the sample size up to 850 million people. The data geeks at FB have released information on how seasons affect relationship.

It turns out summer is unkind to relationships. Looking at the days of the week, Sunday, Monday and Tuesday were good days to start a new romance, while Friday and Saturday are peak break-up days.

Lots more interesting tidbits the chew on. The analysis was done in part by Andrew Fiore, who has produced a number of online dating research papers in the past. Andrew, keep sending us the good stuff.