"The Biggest Loser" alum Bob Harper is engaged to his boyfriend Anton Gutierrez. Harper made the announcement on Instagram Sunday alongside a photo of his hand and Gutierrez's wearing matching gold wedding bands while at a resturant. "Well this happened yesterday," Harper captioned the image. Gutierrez uploaded a similar image on Instagram writing, "I can do this forever." Harper and Gutierrez have been dating since at least 2016. Harper starred on "The Biggest Loser" as a trainer for 16 seasons before becoming host for Season 17 following Allison Sweeney's departure. USA Network announced in May that a reboot of "The Biggest Loser" will be arriving in 2020.