Found Treasure (Musaicum Romance Classics). Grace Livingston Hill

The entire town went crazy when a young college football star, Lawrence Earle, came home. All the girls in town plan a big picnic for him. Effie wants to be like the rest of the girls but they do not want her. Instead of meeting young Lawrence, Effie was humiliated. Convinced that she is not a proper lady, Effie is trying to become something she is not. Struggling with herself, faith puts her directly in the arms of a young football star. Now, Effie is able to experience true love and to appreciate herself.