She confessed she once Googled the 28-year-old singer to show someone his "cute" photos.
"The last thing I Googled was my boyfriend Anderson East to show off his cute pictures," the star said.
Lambert and East confirmed their relationship in December 2015 following the country star's divorce from Blake Shelton.
Lambert dedicated a sweet post to East in April after dazzling with the singer at the 2017 Academy of Country Music Awards.
"My sweet handsome date. Thanks @andersoneast for being so supportive and kind. #bamaboy #backtothefarm #texasbama #blueeyes," she wrote on Instagram.
Lambert and East have been a focus of public interest since going public with their relationship. The country star called out critics in November after sharing a photo with East from the 2016 CMA Awards.
"Last night I was all dolled up and 'out on the town' with my sweet man at the CMA awards in Nashville," she wrote. "Just now when I looked I realized so many comments were judgmental and negative."
"Cowardly people hiding behind a keyboard or a cell phone writing their useless comments about our eyes and clothes and body language," the star said.
"Thank y'all for reminding me why I read books, write songs, and spend most of my time with animals and people I trust and love."
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