Where can I watch Dear John in United States?

Dear John is a British sitcom created and written by John Sullivan. Two series and a special were broadcast between 1986 and 1987. The title refers to 'Dear John' letters, girls to their boyfriends breaking off a relationship. John discovers in the opening episode that his wife is leaving him for a friend, and he is forced to find lodgings. In desperation, he attends the 1-2-1 Singles Club and finds other members mostly social misfits. In 1988, an American adaptation of the same name was produced by Paramount for the NBC network, starring Judd Hirsch. It lasted for four seasons.