Big Sean is now facing accusations that he cheated on his ex-fiancee Naya Rivera with one of her co-stars from the hit show Glee.

According to Fashion Times, questions of fidelity were the reason for the big breakup, but Naya allegedly found out about the hook up through text messages on the rapper's phone.

"She screamed at The Fiancé about why - of all the people in the world - why would he f*ck around with one of her colleagues? The Fiance couldn't even deny it. The evidence was right there on his phone," the report says. Tensions are high on set since Rivera's breakup.

A recent report by TMZ confirms problems with production after Rivera stormed off the set after a heated debate with co-star Lea Michele on Tuesday. While Naya's sources accused Michelle of being a diva, Michelle's sources state that they weren't shooting scenes together and that Rivera was kicked off the set.

Source: fashiontimes.com