A screenshot from Wong's tweet showed Facebook stressing to employees that the app in testing was only to be used for the development of software, not romance. The Dating feature won't cost anything and won't show ads, but Facebook might reconsider the monetization status later on.
The social media giant is internally testing the service with Facebook employees, according to a Twitter user who appeared to leak screenshots of the app on Twitter.
"Dogfooding this product is completely voluntary and has no impact on your employment", the screenshot further read, adding that the product is confidential.
Facebook employees in the company's offices in Mountain View, California, who opted into the internal testing programme were sent links to sign up to the app last week.
Tourist plane crashes in Swiss Alps, 20 dead
"The police have the sad certainty that the 20 people aboard perished", police spokeswoman Anita Senti told a news conference. Earlier on Saturday, a small plane carrying two parents and their two children crashed in the nearby canton of Nidwalden.
Think of dating apps, and the likes of Tinder, Grindr and Match.com spring to mind, and now Facebook is looking to take itself a slice of the action.
Facebook's third attempt to capture Snapchat's market, named Slingshot, too crashed.
The development comes after an independent app researcher claimed to have gained access to the sign-up screen of Facebook Dating.
"This is going to be for building real, long-term relationships, not just hook-ups", Zuckerberg said at the conference. The so-called Dating feature will be based inside Facebook's main app, TechCrunch has learned, along with its other functions that aren't seen on the display. If a mutual attraction is established, you and your virtual date can start messaging each other through WhatsApp or Facebook Messenger.