CONFIRMED: Big Sean CHEATED on his ex fiance with Ariana Grande!

Ariana Grande and Big Sean dated for some time before splitting last year but it has recently come out that Big Sean and Ariana were seeing each other while he was still engaged!

Before Big Sean and Ariana were an item he was engaged to Glee star, Naya Rivera which ended pretty messy back in April 2014.

According to Naya Rivera's new memoir Sorry Not Sorry, Sean was seeing Ariana while he was still with her!

"We'd been fighting for five straight days while he was traveling, and then on the one day that he was back in L.A., he said he didn't want to see me. Well, a**hole, I've got a key to your house."

"I walk in, go downstairs, and guess what little girl is sitting cross-legged on the couch listening to music?… It rhymes with ‘Smariana Schmande.'"

"I learned that I was no longer getting married from the internet, and at the same time as the rest of the world… Not only were we no longer getting married, but apparently we weren't even together anymore."

Perez Hilton

Images: Getty/Instagram