Washington: Facebook, on Thursday (September 5) took on its rival, Tinder, and rolled out its online dating service for the United States.

"Facebook Dating", that was announced last year is already available in other countries that allows its app users to link their Facebook and Instagram post to a separate dating profile.

According to reports, this app would seek to promote connections with more than two billion users of the social network worldwide.

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The unique feature, "secret crush" would allow people to connect to others if both express interest in each other secretly.

However, the dating app would match the user with their friends, unless one chooses to use "Secret Crush" and both add each other to the list.

Safety, security and privacy are the forefronts of this app. The app also prohibits one from sending photos, videos and making payments in the app.

The safety and security measures taken by Facebook may have an advantage over its rivals as the app functions for free, unlike other dating apps that offer both free and paid plans.

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The app is already launched in Argentina, Bolivia, Brazil, Canada, Chile, Colombia, Ecuador, Guyana, Laos, Malaysia, Mexico, Paraguay, Peru, the Philippines, Singapore, Surinam, Thailand, Uruguay and Vietnam. The app is all set to be launched in Europe in 2020.