Gong Hyo Jin attracts talented, appealing leading men. And she just acquired another one.

In "It's Okay, It's Love," she will play Ji Hae Soo is a psychiatrist who identifies with and strives to understand her patients. And the patient she will best relate to will be played by actor Jo In Sung.

Jang Jae Yeol is a mystery writer and radio disc jockey that suffers from an obsessive-compulsive disorder. Those with obsessive-compulsive disorder feel compelled to carry out rituals that seem meaningless to others. His life will probably be defined by his disorder, much like Jack Nicholson's was in the film "As Good As It Gets."

Jo In Sung last appeared in "That Winter The Wind Blows," in which he romanced the beautiful Song Hye Kyo, and is also known for the film "A Frozen Flower," which he co-starred in with Song Ji Hyo and Joo Jin Mo.

Gong Hyo Jin's attractive co-star last year was the actor So Ji Sub. He said that he signed on for "The Master's Sun" because he wanted very much to work with her. He described her as a comic genius and also said she was as sweet and lovely in person as she appeared on camera.

"Hyo Jin is the reason I decided to get involved in the project," he said in a "Midnight TV Entertainment" segment. "She owes me dinner after the show."

In that drama she played a woman with the ability to see ghosts and he was the only man who could make them go away. The two had so much comic chemistry in the show it was easy to ship them. "Would you guys date for real," netizens kept posting. But, alas, there was no real-life romance.

Cha Seung Won was another attractive actor who was eager to play her romantic lead. They appeared together in another Hong Sisters drama "The Greatest Love." In that drama, she played a member of a formerly famous girl group and he played an idol. The two clashed and then fell in love but only onscreen.

In real life, Gong Hyo Jin did date one of her co-stars. She dated actor Ryu Seung Bum, whom she met on the set of the 2001 drama "Wonderful Days." They starred together again in the comedy "Conduct Zero." They broke up in 2003 but remained friends and worked together in the film "Family Ties." In 2008, they started dating again and were both in "Dachimawa Lee," which was directed by his brother Ryu Seung Wan. But in 2012, despite being a favorite celebrity couple, they broke up again.

"It's Okay: That's Love" starts filming in April and will be shown this summer following "You're Surrounded."