Even though Ariana Grande has tried to avoid the rumors that she's dating Big Sean, the rapper recently spilled that they have crazy chemistry. In fact, he's been getting even more vocal about their relationship! During the 2014 iHeart Radio Music Festival, he called the "Break Free" singer "my girl" on stage — and didn't hold back on the PDA at the after party.

CLICK HERE FOR REASONS ARIANA AND BIG SEAN ARE PERFECT FOR EACH OTHER!

"She danced with her group for a second but then she quickly grabbed Sean, wrapped her arms around him and kissed him," a source told MSN.

ariana grande big sean iheart radio

While the photos from the event aren't entirely clear, it definitely looks like she's giving him a big smooch!

ariana grande big sean iheart radio party

Since Ariana hasn't made an official statement about her relationship with Sean — except to say that he's one of her "favorite people ever" — we can't confirm that these two are in a relationship. But the evidence is definitely there.

She recently tweeted lyrics from her song "Break Your Heart Right Back", and we wouldn't be surprised if she wrote them about her rumored boyfriend.

After all, they seem so crazy about each other, and we've already caught them holding hands.

Do you think Ariana and Big Sean are really kissing in this photo? Do you think they'll go public with their relationship? Tell us in the comments!

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