What is it like to fall in love with someone behind bars? The WE TV show Love After Lockup asks that question as it follows men and women who are in relationships with a person in prison.

The program, which debuted in 2017, quickly became the fastest-growing new cable series of 2018. Season 2, which premiered on December 7, features several new couples as well as a few returnees who must adapt when the incarcerated person is released from prison. A recent New York Times article speculated that one reason for the show’s popularity was that many people know someone who’s in prison or has been, given that the U.S. has the highest incarceration rate in the world.

Why are the inmates in prison?

Viewers are fascinated by the show, and they have plenty of opinions about whether the relationships are for real, and whether they’ll last on the outside. And of course, there are questions about what exactly the inmates did to get locked up in the first place.

Many of the people on the show ended up in prison on drug charges or because of theft or fraud. None have committed extremely violent crimes like murder or rape.

Season 2 inmate Tracie is in prison for fraudulent checks and a parole violation. She met her boyfriend Clint on Meet-An-Inmate.com. Clint has had his own run-ins with the law – he was arrested in 2017 for crashing a Little Debbie snack cakes trailer into a storage unit, Starcasm discovered.

Former Marine Marcelino also met his girlfriend Brittany on Meet-An-Inmate.com. She was in prison for conspiracy to commit robbery. She’s been in prison for close to a decade.

Caitlin met Matt on Craigslist. He was in prison for possession of a firearm, stolen property, and eluding police. This isn’t the first time he’s been in prison, and he reportedly has a drug problem.

The love triangle between inmate Michael, his girlfriend Megan, and his wife Sarah has been one of the more dramatic storylines of Season 2. Michael was doing his second stint in prison after pleading guilty to accessory to a felony before being released earlier this year. But he’s now back in lockup after being caught with drugs, a violation of his parole.

Tony and Angela appeared on Season 1 of Love After Lockup and are back for Season 2. Tony was in prison after being convicted of possession of firearm caught in possession of a felon. He has a lengthy criminal history and has previously served time in prison for drug trafficking and stealing a firearm.

Season 1 couple Scott and Lizzie also returned for the show’s second season. Before her release, Lizzie was in prison for a DUI. When she was arrested in 2008, her “flirty” mugshot went viral, Starcasm explained. She also allegedly tried to bribe the arresting officer with sexual favors and $10,000. At the time, she was on probation after being caught with several pounds of marijuana and had several prior drunk driving arrests.

Love After Lockup airs Fridays at 9/8c on WE TV.