Here We Go Again (1973)

Richard and Judy, parents of son Jeff, divorce after 17 years of marriage. Jerry and Susan, parents of Cindy and Jan, break up after a 10-year marriage. Richard and Susan fall in love and marry, and Richard moves in with Susan, Cindy, and Jan. Unfortunately, Jerry lives only a block away, and Judy just a half-mile from the Evans home, so both ex-spouses drop in from time to time to stir up trouble.