When was the last time you got set up by a friend, relative or co-worker?

“Getting set up” no longer has to mean that another person goes out of their way to introduce two people. Now that dating apps such as Tinder, Hinge, Bumble and others are using Facebook data in their algorithms, singles can see who their mutual friends are before swiping left or right. Suddenly, singles’ social networks have become our inadvertent matchmakers.

Daters might make assumptions about a person by seeing the friends they have in common: Is this guy goofy like the friend we have in common, or overly serious like the colleague we both know?

It’s hard to know until you meet IRL. But one thing that came through conversations I had for this episode of the Solo-ish podcast was that successful couples often have similar values. And often our friends share our values.

When Christina Antoniades, who sets up couples for The Washington Post’s Date Lab, looks for good matches, she tries to pick daters who have similar outlooks on life; maybe they’re both adventurers or they both work in education. Paul Carrick Brunson, a professional matchmaker, talks to everyone in a clients’ life — family members, friends, even their exes — to get a sense of what a person’s brand is, so that he can find someone who might be a good fit.

You can listen to our conversation here — or subscribe to the Solo-ish podcast on iTunes.

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