Mann popped the question while the couple were vacationing in Napa, CA in May, reports People.
The singer said of his proposal: "It was beautiful... It was simple [with] lots of wine."
His fiancée told the magazine that Mann's proposal was particularly meaningful given his recently hectic schedule on The Voice.
"With The Voice, we'd been spending so much time with friends and family, and things were so chaotic, which was incredible, but it was really nice to just... have the two of us just on our own," she said.
Perloe has appeared in several feature films, including the upcoming Some Girls, and also guest starred in True Blood and Fringe.
Mann finished fourth on the most recent season of The Voice.
> 'The Voice' Chris Mann: 'Glee fans are unlike anything else'
Watch Chris Mann perform 'You Raise Me Up' on The Voice below: