Bronco Billy

Bronco Billy is a 1980 American film starring Clint Eastwood and Sondra Locke. It was directed by Eastwood and written by Dennis Hackin.

The show moves on to a new town and Bronco Billy goes to city hall to get a permit. He bumps into Antoinette Lily Sondra Locke and John Arlington Geoffrey Lewis, who are there to be married. Antoinette despises her future husband, but has to marry before she is thirty in order to inherit a large fortune. Their car breaks down at the motel opposite the Wild West Show. The next morning, Arlington steals all her money and their repaired car. She is left to fend for herself.Bronco Billy talks Antoinette into becoming his new assistant, Miss Lily, though she only agrees to do one show. Her first performance is unusually successful, although Miss Lily irritates Billy by not sticking to the script. ........

Source: Wikipedia