Catelynn and Tyler rose to fame on MTV's 16 & Pregnant, before starring in spin-off Teen Mom after deciding to give their baby up for adoption almost five years ago.
The couple felt that they were not mature enough to be parents when their daughter Carly was born and that they would not be able to give her the life they wanted her to have.
Catelynn and Tyler still see their daughter and her adoptive mum and dad twice a year, and they have decided they are finally ready to raise a child themselves.
Now 22, Carly told America's In Touch magazine: "I would've felt guilty if I'd got pregnant again when Carly was one or two. But we've both been yearning for this.
"Tyler and I own our own home, have two cars and actually have money to support a kid."
Childhood sweethearts Catelynn and Tyler, from Michigan in the US, got together 10 years ago and became parents to daughter Carly in 2009.
Viewers of the reality shows watched as they made the tough decision to give their baby up for adoption, while also battling with shambolic home lives.
Following the birth of Carly, Catelynn and Tyler got engaged and it is thought their wedding will be taking place in the coming months.
Catelynn revealed to In Touch that she stopped using birth control three months ago, adding: "We're ready to have a baby!"
Did you watch Catelynn and Tyler's journey on MTV? Tell us below, as the best comment from across the website each week wins £50.