HOLLYWOOD, Calif. — Constance Zimmer is getting married!

The 39-year-old actress is now engaged to her longtime boyfriend, director Russ Lamoureux, her rep tells People.

No other details about the proposal were revealed.

Zimmer and Lamoureux, who have been dating for three years, plan to marry in the fall. They welcomed a daughter, Colette Zoe, in January 2008.

Zimmer plays Ari Gold's ex-flame, studio executive Dana Gordon, on Entourage. The HBO show's seventh season premieres Sunday night.