Jon Gosselin has been told to dump girlfriend Hailey Glassman. His spiritual guru, Rabbi Shmuley Boteach, told us, “I have advised him to end it with Hailey. It is unacceptable to be in a relationship when he is still married and has to take care of kids who are hurting. It is not a healthy relationship.” Gosselin’s expected to announce the split during a speech at the West Side Synagogue at 7 p.m. tomorrow. The rabbi added, “Jon will either be remembered as a man who cheats on his wife and is intoxicated by fame, or a man who has fought to redeem himself.”