Big Sean & Naya Rivera Cheating Scandal After Ariana Grande 'Bitter' Split? Pregnant Ex-Girlfriend 'Ignores' Flirty Rebound, Happy Ryan Dorsey Baby Bump Marriage

Rumors suggest that Big Sean recently broke things off with (ex) girlfriend, Ariana Grande. Apparently, the 21-year-old "Break Free" songstress is too "selfish and immature" for the 27-year-old rapper. And now, Sean apparently realizes just how good he had it with former fiancee, Naya Rivera...

Despite their rather sour break-up, the "Mercy" crooner's feelings for Rivera are growing strong once again (allegedly). A "snitch" for the popular gossip webloid HollywoodLife.com reveals:

"Big Sean has reached out to Naya since his split with Ariana. He has some regrets about how everything went down with her, as well as publicly dissing her, and is now trying to make amends."

Maybe Sean ultimately regrets the harsh things he said about the "Glee" beauty in his new hit song, "Dark Sky?"

I done had a Rolex longer than I had relationships, I'm embarrassed to say that sh*t / But I've been working on myself and that's the most important work.

The former couple announced their engagement in October 2013, but eventually split in April 2014. Soon afterwards, Sean began romancing Grande. Rivera quickly moved-on, too. She started dating longtime Hollywood friend, Ryan Dorsey. They married in July 2014 and are now happily expecting their first child together.

Which is why the 28-year-old actress won't fall for Sean's flattery once again. 

"Unfortunately, she doesn't seem interested in hearing it," the source confirms.

Hey - karma!

And now, they aren't talking. Sean hasn't hit-up Grande, either:

"They haven't talked or texted since the breakup - its over and they are both bitter and busy and don't want to get ahold of each other."

But do MstarsNews readers think there is still any chance at reconciliation? 

Meanwhile, Grande doesn't seem too heartbroken. She's busy at work on her new upcoming Television series, "Scream Queens" (which premieres later in September).