There's buzz that Fantasia's babydaddy, Antwaun Cook, is sneaking around behind her back.

Just over a month after Fantasia delivered their new son, it seems Antwaun may have been outed for cheating on her.

A source close to the pair told RadarOnline.com that the bail bondsman has been messing around with other women since before Fannie got pregnant. 

“Antwaun has been cheating on Fantasia all along, just like he cheated on his wife with Fantasia,” the tipster said. “She was silly to think he’d remain faithful but it was wishful thinking, I guess. She purposely had this baby with him hoping he’d be a devoted father and boyfriend.”

The hopes echo a report published by the St. Louis American earlier this month. A source told the newspaper that Fantasia was calling on Antwaun to help her care for their child, Dallas. It was also revealed that Fantasia also has aspirations to become his  next wife.

Of course, Fantasia can't marry Antwaun as he still in the process of divorcing his estranged wife, Paula Cook. Although Antwaun and Paula are separated, the insider told Radar Online that he's made at least one failed attempt to get back with her.

“He tries to get Paula to take him back all the time, but she wants nothing to do with him,” the source revealed. This might not be news to Fannie, however. “Fantasia knows that Antwaun cheats, but she just turns a blind eye hoping for some fairytale turnout.”   

Fantasia had been pregnant with one of Antwaun's children before, but she had it aborted. This was around the time that she had attempted to take her own life back in August of 2010.

Now, insiders speculate that Fantasia's motivation to keep their new baby was an attempt to save or solidify her relationship with Antwaun. The source accused, "She kept this one to keep him."

—Sonya Eskridge

Here's more:
Antwaun Cook bails out
Antwaun Cook defends Fantasia
UPDATE: Fantasia delivery details
EXCLUSIVE: Fantasia's having a boy!
Fantasia named in sex tape scandal
Fantasia's beau confirmed as babydaddy
Wendy Williams calls Fantasia 'dead wrong'