Fantasia Barrino Still Bitter Over Ex Antwaun Cook Leaving Her For His Estranged Wife -- 'If It Weren't For Their Kid, He'd Have Nothing To Do With Her'

After splitting with her boyfriend nearly a year ago, Fantasia Barrino is still bitter that ex Antwaun Cook went back to his estranged wife, RadarOnline.com is exclusively reporting.

And not only did Cook go back to Paula , but she helps care for the son he had with Barrino when he has custody, and if it weren't for 2-year-old Dallas the source says Cook wouldn't want anything to do with the former American Idol https://radaronline.com/category/tags/american-idol winner.

"Antwaun's life is all about his boys right now. He loves those kids more than anything, and doesn't miss the drama with Fantasia," a source close to the situation told RadarOnline.com.

"If it weren't for their kid, he'd want nothing to do with her. He's happy with Paula and what they have going on right now."

As RadarOnline.com previously reported, pals of Barrino, 29, feared she was suicidal in Jan. following Cook leaving her for his wife, but she quickly tried to squash those reports.

"He and I are not together. I’m not going anywhere so stop trying to make me Dead," she wrote on her social media.

The source tells RadarOnline.com that Cook and Barrino speak as little as possible.

"Fantasia just hasn't really moved on , meanwhile Antwaun totally has. He's back with his family and wife, has a new job and is happy," the insider revealed.

"But Fantasia's career isn't booming and she doesn't have anything on the table romantically."