(For gay couples, it's more like two out of every three).
Is it creating a new reality in which people actively avoid real-life interactions?
Of course, others have worried about these sorts of questions before.
It makes it easier for someone who is looking for something very specific in a partner to find what they are looking for.
It also helps the people who use the apps by allowing them to enjoy a pattern of regular hookups that don’t have to lead to relationships.
There are online sites that cater to hookups, sure, but there are also online sites that cater to people looking for long-term relationships.
What’s more, many people who meet in the online sites that cater to hookups end up in long-term relationships.
That's something not everyone thinks this is a good thing. The worry about online dating comes from theories about how too much choice might be bad for you.
The idea is that if you’re faced with too many options you will find it harder to pick one, that too much choice is demotivating.
A couple of months ago, I was sitting at a bar minding my own business when the woman next to me did something strange.
Surrounded by potential partners, she pulled out her phone, hid it coyly beneath the counter, and opened the online dating app Tinder.
In fact, by several measures, online dating has proved even more useful — both to individuals and society — than the traditional avenues it has replaced.