Mac Miller can’t help but swoon over his girlfriend, Ariana Grande.

The rapper took to Instagram to share a sweet message to the “Side to Side” singer after she won Artist of the Year at the 2016 American Music Awards. Accompanying a photo of Grande, Miller said in the caption: “I’m so proud of you. Thank you for bringing so much light into my life. Congratulations on the beautiful bond you have created with people all over the world. Continue to be you, because you put a smile on the face and hearts of so many.”

Grande, who usually doesn’t talk about her relationships, has become rather open about her romance with Miller as well. In an interview with E! News, Grande, who previously did not confirm that she and Miller are dating, referred to the rapper as her boyfriend.

Miller also previously opened up about how he’s handling the attention his relationship with the popstar is getting. In an interview with Vogue, the “My Favorite Part” rapper said he understands why the media is talking about their romance, and he has no problem with it. He’s just focusing on living his life, working on his career and enjoying his relationship with Grande.

“My main thing is that my life is going to continue to be my life,” the rapper said. “I think that I’m not going to get involved in it. It’s there, cool. But we’re low-key. If we’re going to go do dinner, we’re going to go to dinner. And let the world speak, say whatever. That stuff is just its own thing. It’s different for me, but it has nothing to do with us, it’s its own separate thing.”

Miller and Grande sparked romance rumors when the “Dangerous Woman” singer brought out the rapper as a special guest during her performance at the 2016 Billboard Hot 100 Festival.