How many wives did Newt Gingrich cheat on?

Newt pursued his high-school math teacher when he was 16 and she was 23. They subsequently married and had children. He then started an affair with at least one other woman (read the interview his second wife gave last year). When the first wife was diagnosed with uterine cancer, Newt dropped in to visit the day after her surgery and announced that he was divorcing her for the woman he was then seeing. The second wife spent most of their marriage trying to pay off Newt's enormous debts. When she was diagnosed with MS, understandably depressed, she went to visit her mother. Newt called her on Mother's Day to let her know that he was divorcing her for the intern he had been having an affair with. What a man!