Ariana Grande and Big Sean performed at the KIIS FM Jingle Ball in Los Angeles on Dec. 5. According to Hollywood Life, the couple's chemistry is undeniable onstage while singing "Best Mistake" with matching outfits.

Reportedly, the two looks hot as they entertain the crowd. Ariana wore a red sequin bra top and high-waisted shorts, while Big Sean matched it with red plaid shirt with faded jeans and light grey suede boots. The couple "seductively leaned close to one another and Big Sean had his hand on Ariana's hip while she danced into him."

Big Sean not only won the heart of his lady love but also the heart of Ariana's mother. According to Radar Online, the "Bang Bang" singer's mother likes Big Sean and "already treats him like her son!"

"Joan loves Sean because she knows that Ariana is safe with him," a source told Radar. "All she really wants for Ariana is to be with someone for the right reasons and she believes that Sean truly loves her, so Joan loves him."

Hollywood Life previously reported that Ariana and Big Sean's relationship is getting deeper banking on having "spiritual connection." A source told the online publication that the two are "very into their faith since they have been together."

The "loved up" singer confirmed her relationship with the "Clique" rapper two months ago.

"Yes, 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 The Telegraph as reported in Capital FM.

It has been a very good year for Ariana, aside from having a very happy love life, her music career is taking off, and another door is opening for her. According to a previous report from HollywoodLife.com Ariana is being offered movie roles.