Chad falls for another co-star.

Chad Michael Murray just can’t seem to separate his work life and his love life. The actor has begun dating another one of his “One Tree Hill�? co-stars, Kenzie Dalton. Kenzie, barely legal at just 18, plays a cheerleader on the WB teen drama.

Dalton said, “We've been going out since December. Chad and I just hang out. We don't really go out at night,�? reports Glamour.com. And it’s no wonder this pair have been camera-shy - if they started dating back in December, Kenzie was only 17 at the time. Chad, at 24, is seven years her senior.

Chad split with his wife of five months, Sophia Bush last year. Bush and Murray also met on “One Tree Hill.�? Of the difficulty of working so close to Murray’s ex, Dalton says, "Sophia and I don't talk, but she is aware of our relationship."

In the past, Chad has also been linked to his Freaky Friday co-star, Lindsay Lohan, and his House of Wax co-star, Paris Hilton. Lohan and Hilton reportedly made flirtatious phone calls to Murray often while he was engaged to Bush.