Fantasia Barrino's ex-boyfriend/baby daddy Antwaun Cook is back with his estranged wife, Paula Cook.

According to Radar Online, after breaking up with the American Idol winner, Antwaun reportedly went back to Paula to rekindle his marriage.

"Antwaun's father passed away the week of Father's Day and they were really close, so since then he's been wanting to work on his marriage," a source told Radar.

"Technically he's still married to Paula and they're back together now. The only tie he still has to Fantasia is his son, Dallas."

Reports also indicated that Antwaun and Paula have been spending more time together.

"Antwaun and Paula spent Thanksgiving together at his mother's house in Wilmington," the source revealed.

"And in November they went on a trip together with a bunch of friends to the Bahamas for a birthday. Antwaun doesn't really talk to Fantasia much anymore except about their son."

Antwaun started dating Barrino a few years back when he was a T-Mobile manager in Charlotte, NC. He left Paula to pursue a relationship and start a family with Barrino. Paula even tried to take Barrino down, suing her in 2010 under the "alienation of affection" lawsuits that are still upheld in North Carolina and a few other states. She also attempted to sue the singer for $100,000 because she felt that Barrino was the cause of her failed marriage.

However, Paula's lawsuit did not go through.