Before finding love on Paradise, Nolan made headlines for her "emotionally intelligent" tiff with Corinne Olympios on Nick Viall's season of The Bachelor. Peth, meanwhile, was sent home by JoJo Fletcher on her season of The Bachelorette.
Congrats to the happy couple!
Bachelor in Paradise airs Mondays and Tuesdays at 8 p.m. ET/PT on ABC, with Peth and Nolan's engagement airing on the Sept. 11 finale.
Watch ET's interview with last season's successful couple, Carly Waddell and Evan Bass, in the video below.