Kathryn Dennis and Thomas Ravenel are having major co-parenting struggles.

After parting ways at the end of last year, the Southern Charm couple began feuding with one another publicly, and now, Ravenel has reportedly gone weeks without seeing their two children, Kensington, 2, and Saint Julien, 5 months, and he's not paying any child support to Dennis.

"I will be honest. There's been questionable behavior. I'm sure people see it on social media, every platform he blasts me on," Dennis told Bravo TV's The Daily Dish earlier this month. "So that's not been fun, but you know, hopefully he'll get over that."

In February, Ravenel reportedly went public with a new woman in a since-deleted Instagram post, and a short time later, Dennis shared a series of tweets criticizing him to her fans and followers. However, according to Dennis, her tweets weren't in response to Ravenel's possible new girlfriend.

"I didn't even see that [photo] before I posted [the tweets]. Someone sent that to me after I tweeted," Dennis said. "I feel like I've been so lied about publicly by him that I don't know, I just kind of caved, and I don't even remember what I tweeted, but I tweeted something finally. I felt really stupid afterwards because I don't like to stoop to his level, but it's hard to be lied about, especially when it's parenting and children."

"I've gone without electricity. I've gone without heating and air. He doesn't even ask me if I'm OK. He doesn't care at all, but that's fine. I'm gonna make it work on my own. I always have, and I'll figure it out," Dennis continued.

As for her decision to keep their kids from him, Dennis added. "It's not because I'm trying to be mean to him. It's not motivated by my own personal hatred. It's motivated by the simple fact that I don't know if I feel comfortable trusting him alone with them right now, given his behavior and the company he has."

For more of Kathryn Dennis and Thomas Ravenel, tune into Southern Charm season three on Mondays at 9 p.m. on Bravo, and check out a sneak peek of the upcoming episode below.