What Facebook knows about love, in numbers

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NEW YORK (AP) - With 1.23 billion users in all the flavors and stages of romantic relationships, Facebook knows a thing or two about love.

For example, two people who are about to enter a relationship interact more and more on Facebook in the weeks leading up to making their coupled status official. Then, their interactions decline - presumably because they are spending more time together offline.

But while they interact less, couples are more likely to express positive emotions once they are in a relationship, researchers on Facebook's data science team found.

Touching on everything from religion to age differences, Facebook has been disclosing such light-hearted findings in a series of blog posts this week, with one coming up later Friday and another, on breakups, Saturday. Friday, of course, is Valentine's Day.

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