Things got ugly on last night’s Teen Mom 2!

Kailyn Lowry’s scenes for the episode focused on the aftermath of her ex-husband, Javi Marroquin, breaking into her house — which prompted her to call the police. Unfortunately, cameras weren’t rolling at the time — so we’re not exactly sure what happened — but that didn’t stop Kail from relaying details to her ex/baby daddy, Jo Rivera, and her producer, J.C. Cueva.

MUST SEE: Kailyn Lowry Disses Javi — Again!

“He went through all my drawers. I think he was trying to see if someone lived here. I got upset because he wouldn’t leave. I called the police, he told me there’s nothing I can do about it until the divorce is finalized,” she explained.

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Even Jo — who refused to take sides with the drama previously — was upset with Javi’s behavior, as he felt his son, Isaac, 7, was being put in a situation where he felt uncomfortable.

“You need to have something in writing, because that to me is not acceptable at all,” Jo complained. “I don’t like picking my son up and he’s f–king scared. If [Javi is] f–king crazy enough to just walk in your house, then what the f–k else is he gonna do?”

MUST SEE: Javi Marroquin Breaks His Silence on His “Pregnant Girlfriend”

When the cops did show up at the house, they ultimately couldn’t do much to help Kail — since, at the time, it was still technically Javi’s house as well.

During the live Teen Mom 2 after show, Kail called the ordeal “uncomfortable and unexpected.”

“I don’t want to go through it again. It was crazy. I hope we both move on,” she said. “I feel bad he hasn’t moved on as quickly as I did. Javi believes every single rumor. How many times can I say sorry about what I’ve done? I can’t apologize for something I didn’t do. He can’t believe everything he hears.”

MORE: Kailyn Debuts Her Third Baby Bump — See the Pic!

Yikes. Hopefully these two can resolve their issues soon — for the sake of their three-year-old son, Lincoln.

Scroll through the see more of Kailyn’s exes!