Darren Criss Engaged to Longtime Girlfriend

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Darren Criss and Mia Swier

"Mia and I have had seven and a half years of fun, wacky, wonderful, CRAZY adventures together. And I’m happy to announce that we’re kicking those adventures up a notch," the actor wrote on social media.

Darren Criss and longtime girlfriend Mia Swier are finally tying the knot.

The Assassination of Gianni Versace: American Crime Story actor announced the couple's engagement on Twitter and Instagram on Saturday. "Mia and I have had seven and a half years of fun, wacky, wonderful, CRAZY adventures together. And I’m happy to announce that we’re kicking those adventures up a notch," he wrote. "We’re goin for it. To boldly go where neither of us have gone before. Engage."

Criss first became known to American television viewers as Blaine Anderson on Fox's Glee, and most recently played serial killer Andrew Cunanan, the murderer of Italian fashion magnate Gianni Versace, on the latest installment of FX's American Crime Story

Assassination of Gianni Versace is the third most-watched scripted cable premiere of the last year, having raked in 5.5 million viewers of its premiere so far.

See Criss' announcement, below.