Final answer:
The affair between Bill Clinton and Monica Lewinsky lasted approximately 2 years, from 1995 to 1997.
Step-by-step explanation:
The affair between Bill Clinton and Monica Lewinsky lasted approximately 2 years, from 1995 to 1997. The relationship began in November 1995 and ended in March 1997. It became public knowledge in January 1998 when reports of the affair surfaced.