Ariana Grande and Big Sean are now Instagram official, expressing their love through couple-selfies. Or would you call it us-ies?

Grande posted an Instagram photo of her and Big Sean captioned, "On our way to grandp's celebration earlier."

Big Sean reposted her photo with the caption, "My baby."

Rumors about the two's relationship were confirmed last month when Grande spilled the beans to The Telegraph.

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

The rumors started to spread once the couple worked together for Ariana's album "My Everything."

Last year, the pop singer recorded her hit song, "The Way" with MC Mac Miller and rumors of a relationship between the two surfaced as well. It was quickly confirmed that they were platonic friends and just shared chemistry in their music video.

So it's nice for fans to see who the former "Victorious" star is really dating.

Big Sean is a featured artist on Grande's track "Best Mistake" and stars as the "whisperer" on her single "Problem."

Grande recently became the first female solo artist in the U.S. to achieve two number one albums within 12 months since 2010, according to OK Magazine. She also made U.K. chart history in July when "Problem" became the first song to reach number one single based on sales and streaming.

Her rapper BF has recorded two studio albums and, until April of this year, was engaged to singer Naya Rivera. Rivera moved on long ago too, with her new husband Ryan Dorsey.

The 21-year-old singer, Grande, was devastated when she lost her grandfather back in July. She abandoned all commitments to be by his side during his last moments. Her "amazing" Big Sean is seemingly by her side now when she needs him the most.