Since Ariana Grande's split from "The Janoskians" Jai Brooks, the former red-head has been constantly linked with Hollywood hunks. Reports claim Grande is in a relationship with Justin Bieber with whom she admitted shared "flirty texts" with. However, with all the evidence gathered, Nathan Sykes just could be Ariana Grande's official boyfriend.

After sharing the stage countless times to sing the theme song for "The Mortal Instruments: City of Bones", "Almost is Never Enough," fans are claiming Ariana Grande and Nathan Sykes are an item. Well, who wouldn't come to a conclusion given their too cute PDA during and after their performance?

Sources close to Grande and Sykes claim that the two are already a couple. The source goes on to add that Sykes makes a point to send the "Sam & Cat" cutie flowers each day. As for Nathan and Ariana, the singers have remained mum about the rumours. Nathan Sykes has been quite coy in answering questions about their relationship status with Grande.

"There's lots of lady love on Twitter ... lady love from fans," stated Sykes. On the other hand, Ariana Grande has been avoiding the question altogether.

Given they're both single, talented and good-looking stars, it's no surprise fans would link them together. Even if they do claim that they aren't together, it's pretty obvious that they indeed are. Grande does have nothing but praises to say about The Wanted singer.

"Nathan is very talented and adorable and a wonderful person," stated Grande.

Check out the slideshow to find out five other proofs that prove Nathan Sykes and Ariana Grande are officially a couple.

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