The feature is not ready to the public yet but is now internally tested by the company’s employees. According to Tech Crunch, The feature is purposefully for finding a serious partner.
Facebook explains that potential matches will be recommended based on dating preferences, things in common, and mutual friends. Users will also have the option to discover others with similar interests through their Groups or Events.
To use you will have to opt into activating Facebook Dating. Only other people who have also turned it on will be able to see you, and it won’t be shared to News Feed. You can choose if friends of friends can see you or not.
Facebook has no plan for paid subscriptions to premium dating features. It’s currently not going to show ads.