Ariana Grande, Big Sean Dating Rumors- 'My Everything' Singer's Boyfriend Says He's Proud Of His GF On Instagram

Big Sean is all but confirming his new relationship with Ariana Grande today. The rapper who is featured on Grande's newest album My Everything, on the track "Best Mistake," gave a shout out to his girl on his Instagram account.

Sean posted the image cover of Ariana's new album along with a sweet message, writing, "Ari's #1 in 80 countries! So great when good things happen to good people. I'm more than proud of you @arianagrande n grateful to be apart of it!"

The former Nickelodeon star, who just performed at the Video Music Awards this past Sunday and released her album on Monday, has been a pretty busy girl. Not only was her new record on of the most anticipated of the summer, but it went on to become number 1 on iTunes in more than 80 countries around the world.

The singer and rapper reportedly got close after Sean's split with Glee star Naya Rivera. They then worked closely on what Ari considers to be one of her favorite songs off of the entire album.

E! News reported earlier this month that the coupling happened during the recording process.

"They have been friends since they made the song together," a source told the entertainment site. "They have been spending more time together and recently have been getting very close. They are both doing great."

This news comes on top of the couple's debut together behind the scenes of the VMA's this past Sunday. MTV News posted a video to their Instagram page of the two holding hands backstage of the award show.