The rapper has been dating the 'Problem' singer for two months but has been a big fan of her musical talents for some time.
He said: ''Me and her make a lot of music together and the chemistry between me and her when we work is great.
''We got more in the works too. I feel like her voice is crazy, [just] that that big voice comes out of her is insane. I was probably one of the first people to tweet about her music; me and her been friends for years before anything else...
''I was the first rapper to perform at the White House, I performed there with Ariana so that was an honour.''
The couple - who previously worked together on 'Best Mistake' and 'Right There' - haven't publicly confirmed their relationship but were caught on camera backstage at the recent MTV Video Music Awards (VMAs) holding hands.
However, Sean insists he didn't mind.
He told MTV News: ''I had no problem with it.''
The new couple's romance came as a shock to fans as Big Sean - whose real name is Sean Anderson - only ended his five-month engagement to 'Glee' actress Naya Rivera in April this year.
Pixies kicked off the European leg of their latest tour in the sleepy retirement town of Bexhill-On-Sea.
Kent punk duo Slaves held up their pledge to headline a gig on the Kent coast this weekend when they once again took to the Hall By The Sea stage at...
The batsman is batting for the music industry these days.
He is set to unveil his new album 'Cowboys and Africans'.
'Ginger' is the kind of album that sees Brockhampton coming to terms with what they've been through.
It's time for our monthly round-up...