Say Hello to Yesterday (1971)

Jean Simmons is a housewife on a brief shopping trip to London. A young, unemployed lout (Leonard Whiting) who, seeing her on the inbound train, sets his sights on her, and tries to get a response from her as he chases her all over town. At one point desperate, he steals her purse so that he will be the one chased. Eventually, he breaks down her reserve and they are able to meet properly, converse, and get to know one another. A romantic energy has developed in their relationship as the unlikely twosome joins together briefly.