Teen Mom OGstarAmber Portwoodadmitted she was struggling with her mental health just days before she wasarrestedand charged withdomestic violence.

In an exclusive sneak peek at Monday’s episode, Portwood discusses her latest therapy session with boyfriend Andrew Glennon.

“We need to lay down after that one. That was pretty intense,” she tells him as they get in the car with their 15-month-old son James.

“What’d you guys talk about?” asks Glennon.

“Just like negative self-talk and like how I push away happiness, which leads to like pushing away you,” says Portwood, who met Glennon on the set ofMarriage Boot Camp: Family Editionin 2017.

“Yeah, I mean I know there’s like those mornings where you’re upset and there’s no real reason for it,” Glennon replies.

While Portwood acknowledges that she needs to work on controlling her mood swings, she stresses that Glennon’s support is vital for her success.

“All you can really do is just be there for me and be happy,” she says. “I just gotta like keep working on it, and understanding its not just bipolar, it’s not just borderline, or anxiety, it’s also things that have happened in your life. When I start to get in my head at night, when I can’t sleep, this kinda just amplifies it, I guess. I just, you know how I blow up, because I don’t draw that line. I don’t have that boundary, I guess.”

“Yeah, I know those moments,” Glennon says. “Once you’ve recognized that you’re in that state of mind, just to try and like diffuse it or walk away, it’s not worth it. Life’s too short for that, babe.”

“But it’s like…and I’m not like choosing, ya know,” says Portwood. “I let things frustrate me to the point where I get so angry, and I’m just exploding.”

Amber Portwood/Instagram

Amber Portwood Andrew Glennon son

The day after the incident, Portwood wasfurther chargedwith domestic battery, criminal recklessness committed with a deadly weapon and domestic battery committed in the presence of a child less than 16 years old, according toPage Six.

Glennonfiled for sole custodyof James several days later.

Glennon alleged that Portwood “went to her drawer and took a handful of Klonopin and tossed it back like it was nothing,” during the dispute, according to the affidavit filed with the court.

Marion County Police Department

Amber Portwood

After he told her that he “was going to call for help,” Glennon allegedly said to Portwood “regurgitated the pills.”

Then, Portwood “picked up a machete towards him and [James],” per the affidavit.

A source previously told PEOPLE thatdrugs were not a factorin thealleged violent dispute, and added that “the situation was a little more complicated than what’s been reported.”

Nearly two weeks after Portwood was arrested and charged with domestic battery, she posted acryptic messageon Instagram about infidelity, leading some to wonder if Glennon had cheated on her.

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However, Glennon told theDaily Mailthat the message wasnot about him.

“My name was never mentioned in the post that she released,” he said. “I guess it was just rough timing.”

“People are just going to slap it on me,” he added. “It’s a bashing of my character, and what hurts, I guess, is the fact that she hasn’t come out and made a statement to say, ‘You know, I wasn’t talking about Andrew, I was talking about somebody else.’”

source: people.com