Just Between Friends is a 1986 drama film about two women whose friendship is tested by tragedy. The film was written, produced and directed by Allan Burns, and it stars Mary Tyler Moore, Ted Danson, and Christine Lahti.
Holly begins teaching aerobics parttime at the gym where she and Sandy meet. Sandy and Holly become fast friends and Hollys children like Sandy as well. Sandy is a careerminded reporter, trying to become an anchorwoman at the station run by George Margolin. One day at work, a news bulletin reveals the death of Dr. Davis in a car crash.Holly is devastated by the news and so is Sandy. Helga, the gyms owner is ready to sell so Sandy and Holly invest together. Holly learns the truth while clearing out her husbands office where she finds a photo of Sandy and her husband together, clearly indicating evidence of an affair. She angrily confronts Sandy who tells her that she was unaware that her new friend was the wife of the man she loved. Holly angrily ends their friendship. ........
Source: Wikipedia