Cocaine, Gun Fights & Overdoses: 'Teen Mom' Sweethearts Catelynn Lowell & Tyler Baltierra's 11 Most Shocking Drug Secrets Revealed In New Tell-All

Lowell says her mother April abused alcohol while her young daughter slept in the same house. "At home it was all parties and drinking. My mom had a different boyfriend every few months, and people were always over at the house partying and playing music loud," the MTV reality star writes in her new book. "I used to get out of bed at night and ask them to turn it down so I could get some sleep before I had to go to school. Her mother's habit was so dire, she would pass out at the kitchen table, Lowell claims. "I'd have to put pillows under her head and make sure she was okay, then take care of my brother and sister," she writes. "It was just never stable at all."

When she was just 13 years old, Lowell discovered that her mother's boyfriend was using crack. When he was high one day, he attacked the teen for making a comment about failing to help the family pack for a move. "This man picked me up by the neck, threw me to the ground, and pinned me down on the floor between the toilet and the shower and started choking me," she recalls. Baltierra pulled him off his terrified girlfriend and called 911.

Baltierra's father Butch was in and out of jail for drug-related crimes throughout the reality star's life. "We were so oblivious to the details of their partying," he says. "We just thought, 'This is how grownup guys hang out.'"

The fast lifestyle was passed down from father to son. Baltierra says he first tried alcohol, cigarettes and marijuana at his father's house at the tender age of 8. "One day we came across one of my uncle's bags of weed," he writes. "We basically knew what it was, but we didn't know what to do with it…so we just kind of stuck it on top and burned it."

One night after huffing air duster, Baltierra woke up on the floor with foam coming out of his mouth. His friends "said I started having a seizure and shaking around on the ground, that my eyes rolled back in my head," he admits. "I even pissed myself. I was so freaked out I had to leave."

Lowell also had a scary experience with huffing. "Once my friend Sam and I were riding our bikes in the trailer park. I huffed some, and then I got on my bike to ride away," she recalls. "Next thing I knew, I was lying on my back on the street with rain pouring down on me. That freaked me out. I didn't even know how long I'd been there. I could have been run over!"

Baltierra says he avoided cocaine until a friend's mother offered him a line. "I thought, 'Sure, why not?'" he remembers. "So I stayed up all night snorting coke with this old woman, coloring crazy sh*t in coloring books." Lowell put a stop to his bad habit immediately, citing her mother's boyfriend's scary crack addiction.

Catelynn's mother April was once caught up in her crack-addicted boyfriend's terrifying fight with drug dealers. "As my mom watched, this guy got her boyfriend on his knees and held a gun to his head, saying 'Give me the money you owe me, or I'll kill you right now,'" Lowell writes, adding that the gunman threatened to kill the entire family. Her mother finally moved out after the incident.

Lowell's mother and Baltierra's father soon began dating and eventually got married. But the relationship was far from healthy. "They'd drink all night, or take pills, or even smoke crack together," Lowell writes.

Lowell once stumbled upon her boyfriend's father smoking crack in the bedroom of their home. "I completely freaked out…I was yelling at him, demanding to know how he could do that with kids in the house, calling him a piece of sh*t," she claims. "I was so shocked and upset and furious."