Earlier quoted context omitted.
The article says this: Facebook Dating won’t match you with friends , unless you choose to use Secret Crush and you both add each other to your list. All of your Dating activity will stay in Facebook Dating. It won’t be shared to the rest of Facebook.
> unless you choose to use Secret Crush Add all your friends to Secret Crush. Watch who matched you. "Sorry buddy, I wasn't really using the thing, I just added everyone, but thanks for letting me know you like me!" Idiots. And this is why the shared identity is a terrible idea for dating sites. You want dating profiles to be throwaway, and you want it to be hard for your friends to find your dating persona for this…
Believe it or not, they actually have put some thought into their final product based on the beta tests conducted in smaller international markets.