Teen Mom stars Catelynn Lowell and Tyler Baltierra have revealed they were serious drug users following chaotic childhoods in a new memoir. In new excerpts the couple shared with Radar Online and the Daily Mail, the couple blamed their turbulent childhood on their drug addictions: "It was chaos all the time. I didn't like it, and I didn't thrive on it, but it was normal to me." Catelynn also detailed how she was attacked by one of her mother’s boyfriends when she was 13-years old: "This man picked me up by the neck [and] threw me to the ground. [He] pinned me down on the floor between the toilet and the shower and started choking me." Both also openly discuss their own past drug use, counting cocaine, ecstacy, cough bottle, sleeping pills, and Ritalin amongst them. Catelynn outlines an incident where she passed out after taking drugs and later woke up in the middle of the road, writing: "I didn't even know how long I'd been there. I could have been run over!" Tyler revealed he suffered seizures from drug use and had first tried alcohol and marijuana from the age of eight. Their new book Conquering Chaos also addresses the first time they had sex, after 10 months of dating and "once we'd done it once, we were doing it all the time! After waiting so long we turned into crazy, horny teenagers. It was so bad." Neither had been given the "sex talk" by their parents, and "we were not being safe at all. We were using the pull-out method, and that was it. I didn't wear condoms and Cate never went on birth control ... we just didn't feel like we had to." It was the couple’s unplanned pregnancy that forced the pair to change their lives – and they said they decided to share their story now and with MTV to offer encouragement to other teens in their situation. The pair shot to fame after they decided to put their daughter Carly up for adoption on the MTV show Teen Mom.