A Touch of Class (1973)

This movie has great dialog, some pretty locations, and two likeable leads:  George Segal and Glenda Jackson.  However, it's an affair movie, which is a tough sell.  As likeable as you make the characters, they're still cheating and hurting people.  If you make them sympathetic, you have limited choices for resolution.  For example, the writer can make the spouse non-sympathetic - a tricky movie.  Or the writer can end the affair. 

This movie falls victim to all these problems, and in addition it loses its way about an hour in.  The momentum is gone and it flails about.  Charming stars cannot fix this problem.  I recommend skipping this one.