LeAnn Rimes and Eddie Cibrian stepped out publicly for the first time Thursday.

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The one-time Lifetime movie costars -- both recently separated from their respective spouses -- spent the day at a golf course in Valencia, Calif. Until now, the pair only saw each other in secret. (Us Weekly broke the news of their relationship after spotting the pair on a three-hour tryst at a Malibu Beach Inn last March, but they have since been spotted together at a bar during an L.A. Lakers game and outside the Malibu home of Rimes' longtime friend.)

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Their day on the green comes one month after Rimes, 26, separated from her husband of seven years, Dean Sheremet. Around the same time, Cibrian's wife, Brandi Glanville, left him in light of the fling. Recently, Cibrian, 36, told Entertainment Tonight, "When you reach a certain point in your career, you're placed in this unfair fishbowl."

See who else is single this summer.

In the new issue of Us Weekly (on newsstands now), Glanville says her ex's "displays of poor taste have hurt our two children," Mason, 6, and Jake, 2. "Eddie is a compulsive liar, cheater and a home wrecker, and he has been an absentee father," she says. "Eddie may just end up drowning himself in that 'unfair fishbowl.'"