Adam Lambert, famous for his initial rise on "American Idol," has since launched a successful solo career and become the frontman for Queen. The Grammy-nominated performer is notable for being the first openly gay artist to top the Billboard charts and is an active LGBTQ+ and human rights advocate.

Since February 2021, Lambert has been in a relationship with 28-year-old Oliver Gliese, who has been recognized in the fashion industry. Gliese is currently the Partnerships Manager for Global Fashion Agenda and is pursuing a Bachelor of Science in Business Administration and Project Management at Copenhagen Business School. Originating from Denmark, Gliese now resides in West Hollywood, California.

The couple was first linked in 2020 after a trip to Mexico and later made their relationship public in 2021. Lambert has featured Gliese on social media, sharing moments from various events including the launch of Lambert’s EP, "Afters."

In February 2023, Lambert spoke about his relationship with Gliese, highlighting the importance of communication. The couple faced online homophobic comments following their night out in West Hollywood in August 2023. Both Lambert and Gliese responded on social media, condemning the hate and thanking their supporters.

Adam Lambert is set to star in the ITV documentary "Adam Lambert: Out, Loud and Proud," which explores the struggles and triumphs of British LGBTQ+ artists in the music industry. The documentary airs on June 19, at 9 pm on ITV1.