Third Time Lucky (1982)

Eighteen years ago George Hutchenson married Beth, they had two daughters and then, after 11 years together, they divorced. George then married Millie and Beth married Bruce, but both marriages also ended in divorce. When George chances to meet Beth again, their love is rekindled but his old-fashioned ways and principles hinder the relationship. To complicate matters further, Beth is now best friends with Millie, George's second wife - and then there is the question of how to tell their daughters that they are to re-marry!?