Movie where Never Too Much is serenaded to someone

Darius Lovehall is a young black poet in Chicago who starts dating Nina Moseley, a beautiful and talented photographer. While trying to figure out if they've got a "love thing" or are just "kicking it," they hang out with their friends, talking about love and sex. Then Nina tests the strength of Darius' feelings and sets a chain of romantic complications into motion.

A wealthy woman discovers a vineyard worker with a beautiful operatic singing voice. She helps make him a star but then breaks his heart. He flees in misery to Mexico where he meets a sweet farm girl.

A singer is involved with two women in his life, one a "good" girl and one a "bad" one."