Credit: Jon Kopaloff/FilmMagic

By this time next year, Josh Lucas will be a married man!

On Friday, the 40-year-old actor announced his engagement during an appearance on The Tonight Show With Jay Leno. Though Lucas kept the details sparse -- he won't reveal his fiancee's name! -- The Firm star told Us Weekly they will "get married over Christmas."

"We've been engaged for awhile, but honestly, the show has been a bit of an epic undertaking, to say the least," Lucas said at the NBC Universal All-Star party in Pasadena, Calif. Friday. "We want to do it when we can enjoy it and take our time. We don't feel any stress or pressure right now and we want to make sure it stays that way."

Though they haven't decided on a location, Lucas and his fiancee are "both pretty low-key, so I think it'll be somewhere in nature," he told Us.

This will be the first marriage for Lucas, whose exes include Salma Hayek, Connie Nielson, Alexa Davalos and Liliana Dominguez.