Gwen Stefani's gushing over her 2-year engagement anniversary with Blake Shelton and sharing how their years-long relationship has made a lasting impression on a fellow co-worker -- Camila Cabello. Stefani took to Instagram on Monday to celebrate the milestone with an adorable photo of the couple sharing a smooch while the «Luxurious» singer flashes her massive diamond ring. Stefani captioned the post «2 years ago today» followed by a slew of heart-filled emojis.After five years of dating, Shelton got down on one knee and popped the question back in October 2020 in Oklahoma. Stefani and Shelton have been dating since November 2015.Cabello, in her first season as a judge on, has a literal front-row seat to Shelton and Stefani's ever-present romance while sitting between them in the NBC reality singing competition series.A post shared by Gwen Stefani (@gwenstefani)During a Tuesday appearance on, the «Havana» singer also gushed about Stefani and Shelton, calling their relationship the real deal.«They're so adorable,» Cabello told the daytime TV host.