Teen Mom 2 star Kailyn Lowry's divorce from Javi Marroquin is getting ugly — but all her ex Jo Rivera is concerned with is the well-being of their little ones.

In the latest preview for the show — which airs Monday, Feb. 6 at 9 p.m. on MTV — the mother-of-two is confronted by her son Isaac's father, Jo. Though the former high school sweethearts appear to be on good terms, Jo seems to express uneasiness regarding his son's involvement in Kailyn's messy split from husband Javi.

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After being caught cheating with another man, Kailyn and Javi got into an explosive fight. Kail has since explained her side of the story, making clear that she was not, in fact, unfaithful. But unfortunately, things got out of hand and the whole ordeal was witnessed by her two sons — seven-year-old Isaac and three-year-old Lincoln.

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"A big fight broke out," the 24-year-old said to her ex. "I just feel bad that the kids were here."

Even though the couple has been broken up for some time, Jo makes it clear that he's going to stand by Kailyn during this difficult period. "We're all adults and we should all be acting like adults," he said. "I wanted to meet up with Javi and speak to him about some things so I think that [the fight] is something that I'll definitely bring up and make sure he knows how I feel about it."

Ultimately, Jo wants Kailyn to make the kids her top priority. "This can't happen for the kids," he said. "You can break them."

Watch the full clip below!

Scroll through to see a timeline of Javi and Kailyn’s rocky relationship!