Ariana Grande, Boyfriend Big Sean Break Free About Relationship; Couple Shares Clingy Moment Via Instagram

After hiding their relationship from the media, Ariana Grande and boyfriend Big Sean seemed to have broken free from all their concerns as they share via Instagram a PDA moment when she clung to him while in a very sexy dress.

The two performed together in Los Angeles for "A Very Grammy Christmas" concert on Tuesday. Big Sean looked very sharp in a black coat and bowtie while his girlfriend, Ariana Grande, "wore a red crop top and matching high-waisted pencil skirt and platform pumps as she sang with her beau on stage," said E! News.

But it's only on Saturday when Big Sean uploaded a photo of him getting cozy with Ariana Grande backstage. One of the photos, which he captioned "Me n my Ari," show Ariana Grande and boyfriend Big Sean locking lips.

One photo also showed their funny side as Ariana Grande posted a photo of manager Scooter Braun walking in on them as they were about to share a kiss.

The two only dated in August after Big Sean separated from "Glee" star Naya Rivera. Ariana Grande also split from The Janoskians' Jai Brooks.

"He is one of the most amazing men in the whole world, and that includes my grandfather and my brother. I think the world of him, and he's an amazing person. That's kind of all there is to it," she told Us Weekly magazine last month.

A source also told the magazine that the relationship has gone from 0 to 60 fast even as they have managed to stay friends for so long.

Ariana Grande and boyfriend Big Sean will join a stellar cast for "A Very Grammy Christmas" special which is set to air on December 5 on CBS. "The 2015 Grammy nominations for Album of the Year will be announced during the broadcast, while nominees in the other 82 categories will be revealed earlier that morning," E! said.