Almost exactly one year after they went public as a couple, Jennifer Love Hewitt and Jamie Kennedy have called it quits.  The Ghost Whisperer costars have confirmed their romance is over, RadarOnline.com has learned.

PHOTOS: Jennifer Love Hewitt Romps In The Sun

Love, as she is often called, had a high-profile relationship with John Mayer and was later engaged to actor Ross McCall.  She began dating Kennedy within weeks of breaking up with McCall.

PHOTOS: Jennifer Love Hewitt & Jamie Kennedy Take In A Dodgers Game

Neither Hewitt of Kennedy has given a reason for the bust-up.