The young singer, 21, opened her heart to The Telegraph and confirmed that she is indeed in a relationship with the 26-year-old rapper.
When asked if Big Sean is her boyfriend, she replied simply, “Yes.”
“He is one of the most amazing men in the whole world, and that includes my grandfather and my brother,” she revealed. “I think the world of him, and he’s an amazing person. That’s kind of all there is to it.”
Big Sean was previously engaged with Glee actress Naya Rivera but they split in April.
For her part, Ariana broke up with longtime boyfriend Jai Brooks in August.