Luke Davis III is a supporting cast member on Teen Mom: Young and Pregnant. He is the ex-boyfriend of Kayla Sessler. They have a daughter together, Ariah Jordynn Davis.
Luke met Kayla when they were attending school together and they began dating in August 2018 when Kayla's son, Izaiah was eleven months old. Luke's presence caused tension between Kayla and Stephan Alexander, Izaiah's father. Prior to Stephan's absence, Luke took full responsibility and raised Izaiah as his own son, as Luke was the only father Izaiah ever really knew when growing up. Kayla considered Luke adopting Izaiah, but it is unknown if the adoption process went through as Stephan would not consent to this agreement.
Eventually, Kayla discovered she was pregnant again at 20 years old with Luke's child. They discovered they were expecting a baby girl in early 2019. The following year, their daughter, Ariah Jordynn was born just before the end of the summer. In 2021, Kayla cheated on Luke with her ex-boyfriend, Ryan, who suspected he could be Izaiah's father when it was revealed that Kayla slept with him around the same time she slept with Stephan before she got pregnant. It turned out Ryan was not the father of Izaiah. However, after sleeping with Ryan, Kayla fell pregnant for a third time but was unsure of who the father could be; Ryan or Luke. She decided to have a termination to salvage her relationship with Luke, but it made things worse and Luke eventually called it quits but still remained living with Kayla, as he wanted to be involved in their daughter's life, as well as Izaiah's. After an incident with Luke's family, Kayla decided to convince Luke to move out and still have a co-parenting relationship with her for the sake of their children. Luke went on to begin a relationship with someone else. Kayla also decided to begin a relationship with Ryan, the guy she cheated on Luke with. Recently, Ryan and Kayla welcomed their first child together (Kayla's third), a son named Zyaire Jaxon Leigh on March 13, 2024.