Single mom-to-be Keshia Knight Pulliam denied allegations that she cheated on estranged husband Edgerton Hartwell.
Hartwell, 38, filed for divorce from Pulliam in Fulton County Court on Monday. They wed on January 2 after dating less than 6 months.
Insiders say the couple broke up about 3 months into their troubled marriage.
In a sit-down interview with ET from her Atlanta home on Wednesday, the 37-year-old former child star said her situation was "hurtful".
She said she was "100% faithful" to her husband -- even though he reportedly cheated on her with his former fiancée.
"I didn't do anything wrong. I didn't cheat on my husband. I didn't do it. It's really that simple," Pulliam told ET's Nischelle Turner.
"I don't know if it's the hormones... no, it's all of it, because it's fresh," she said, fighting back tears. "And it's hurtful. I knew I couldn't be silent, because this isn't about money. This isn't about fame. This isn't about social media likes or follows. This is about my character -- my integrity as a woman being attacked -- and that's not OK."
But a confidential source told Sandrarose.com that Pulliam desperately wanted a baby. She was blindsided when Hartwell filed for divorce.
"The part that hurt me the most when he filed for divorce was that he had asked me to give him another chance, and I was willing to do that and forgive him, for our family," Pulliam insisted.
Sources say Pulliam was fully aware that Hartwell had a fiancée when they dated briefly in 2015.
Pulliam reportedly hid in her car in the parking lot while Hartwell's fiancée sat in the stands watching him coach his son Ed "EJ" Jr.'s peewee league football team.
Pulliam is typical of a narcissist who believes she deserves love at the expense of another woman's pain.
"[Keshia] is immature with questionable moral character and poor judgment," whispered an industry insider who is friends with both Pulliam and Hartwell's ex-wife, Lisa Wu, the mother of his 9-year-old son, EJ.
Lisa Wu introduced her former friend to Hartwell, and the two quickly hit it off.
In a matter of weeks the couple had begun talking marriage. Word is that Hartwell reminded Pulliam that any talk of marriage was contingent upon her signing bank papers for his new gym venture.
He wanted his gym, and she wanted her baby, and that was their agreement, allegedly.
But the agreement quickly fell apart when Hartwell's gym memberships fell far short of his goal.
Hartwell reportedly refused to knock her up, saying he didn't want anymore children.
Even after a well-informed blogger spilled the tea on their broken marriage in May, Pulliam kept up the pretenses by posting a wedding photo of her and Hartwell together in May.
Pulliam's Instagram.com followers repeatedly questioned why there were no recent photos of Hartwell on her page in months.
After pleading with him, Hartwell met up with Pulliam to take photos at a movie premiere in Atlanta in June. But according to witnesses, they arrived separately and he left the theater soon thereafter.
Her slow descent into despair culminated with Pulliam announcing her mysterious pregnancy on Instagram.com in July.
Hartwell filed for divorce a week later to avoid potentially paying child support for another man's baby.
The former NFL player also asked the court for relief in the form of a paternity test when Pulliam gives birth -- to prove the infant isn't his.
"He doesn't know how she got pregnant without his knowledge or cooperation," said the source.
"There's a baby in the middle of this!" said Pulliam. "And regardless, if we don't want to be married, that's fine, because we agree on that. But this baby is what's important, and I feel like that's being lost," she told ET.
"I have to move forward, added Pulliam. "I have to do what I need to to release the hurt, to release this, and to be happy for me and my baby girl, because the stress isn't good. The stress isn't healthy. And my only priority is her."
A friend spotted Hartwell at his son's football practice on Wednesday afternoon. She said he appeared relaxed, upbeat and jovial.
He was overheard telling another friend that his phone hasn't stopped ringing since he filed for divorce.