Ariana Grande & Nathan Sykes -- Yes, We're Dating ... Sorry Justin Bieber

Almost is never enough for Ariana Grande and The Wanted singer Nathan Sykes ... so they're going all the way ... sources tell TMZ, the two are OFFICIALLY dating.Ariana and Nathan have been canoodling for weeks -- and even filmed a steamy music…

Source: http://www.tmz.com/2013/09/24/ariana-grande-nathan-sykes-dating/

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