"Cheyenne Jackson and his husband Monte Lapka have mutually decided to divorce. The couple have been together for 13 years and were married in N.Y. State two years ago. It is an amicable parting and, understandably, a private matter," a rep for the actor tells PEOPLE.
Jackson, 38, who has had roles on Behind the Candelabra, Curb Your Enthusiasm, 30 Rock and Glee wed Lapka in the Hamptons in 2011.
At the time of their nuptials, Jackson Tweeted, "It's official, after 11 years together … Married the best man I've ever known."
Playbill.com was first to report confirmation of the split.
Reporting by PAUL CHI