Since the announcement made by Ariana Grande and Nathan Sykes over Twitter about their relationship, the tweets have been pouring. One tweet in particular was that of Luke Brooks, the twin brother of Jai Brooks who was Ariana's ex-boyfriend. However, leave it to Ariana's brother, Frankie Grande, to jump in action to defend his sister against Luke Brooks.

Ariana Grande and Nathan Sykes are happy and in love, judging from their Twitter posts and photos. However, not everyone is a happy camper of the new couple named the "Nariana" duo. This person would be none other than Luke Brooks. For those who have been living under a rock, Luke Brooks is "The Janoskians" star who is twin brothers with Jai Brooks, Ariana's ex-boyfriend.

Before "Nariana" was even a trend on Twitter, "Jariana" was named the cutest couple. Jai Brooks and Ariana Grande dated for almost a year before calling it quits early in February due to "distance" issues. Yet, the couple managed to reconcile a few weeks after but led to an untimely split in August.

The "Sam & Cat" star had not once spoken up about the break-up, but her mother was swift to jump in defence of Ariana by thanking her supporters on Twitter. Now, with Ariana happy and in love once more with The Wanted's Nathan Sykes, Luke Brooks has something to say against it.

"I think it's disgusting how she could dump my brother and break his heart for Nathan, then rub it all over his face on Twitter," said Brooks in a message to a fan.

Of course, Ariana's brother had a different story to say.

"Anybody who believes that rumor about my sister needs to pause. Open their eyes and remember how much she loved him," stated Frankie. "He CRUSHED her w/ a phone breakup and to see Ari that miserable broke MY heart. It was a sad time for us all," he added.

Between Luke Brooks and Frankie Grande, who knows what really happened between Ariana Grande and Jai Brooks? Fans will only find out if Ariana and Jai open up about it themselves. Check out the slideshow to see more of the former cute couple, "Jariana."