Fans have been fascinated with the stars of Welcome to Plathville since the show’s 2019 debut — and the family’s love lives have become an integral part of the series. The TLC series follows the lives of Kim Plath and estranged husband Barry Plath and eight of their nine children: Ethan, Micah, Moriah, Lydia, Isaac, Amber, Cassia and Mercy. Their eldest daughter, Hosanna Plath, has not been featured. As the kids started to grow up, their romantic entanglements became more prominent, including Ethan’s marriage to and divorce from Olivia Plath. When Olivia and Ethan called it...