Adam Lambert is again in the marketplace … ‘trigger TMZ has discovered the singer and his longtime boyfriend have quietly gone their separate methods.

Sources with direct data inform TMZ … the “American Idol” alum and Oliver Gliese broke up throughout the final month — and we’re instructed it was an amicable, clear, drama-free cut up.

Our sources say the romance fizzled out naturally after greater than three years collectively.

Lambert and Gliese first obtained collectively in February 2021, and by Could of that 12 months, they had been publicly displaying off their love — touring the globe, hitting purple carpets, and displaying up on purple carpets collectively.

Gliese hails from Denmark and works within the trend world … and was incessantly seen cheering Adam on at his performances and premieres.