Gwen Stefani is still gushing about her early days with Blake Shelton.

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The “Hollaback Girl” singer is all about throwbacks on this Thursday, April 25. Stefani, 49, shared an adorable photo of her and her beau Shelton, 42, from their time on “The Voice”.

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#ticktock #timeflies @blakeshelton #bestie ❤️ gx

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The two musicians developed feelings for one another during their second season as coaches on the reality singing competition. Stefani captioned the Instagram pic with a series of hashtags: “#ticktock”, “#timeflies” and “#besties.”

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Stefani and Shelton went public with their relationship in late 2015. Since then, they have collaborated the country crooner’s 2016 song “Go Ahead and Break My Heart” and the pop songstress’ 2017 track “You Make It Feel Like Christmas”.