Levi Keith Johnston (born May 3, 1990) is an American model and actor, best known as the twice-former fiancé of Bristol Palin and father of their son Tripp. He first received media attention in August 2008 when U.S. vice presidential candidate Sarah Palin announced that her daughter Bristol was five months pregnant by Johnston and that the two were engaged. The couple ultimately ended their relationship, and Johnston and the Palin family engaged in several public feuds.