To create natural conflict in your story, insert a major difference between your main characters

Shirley Valentine, from the Willy Russell play, is at heart adventurous and yearning for excitement in her life. This is shown best by putting her with an unadventurous husband, and it leads to conflict in their relationship because of their opposing qualities, which eventually results in Shirley going on holiday to Greece with a friend where she has a rollercoaster of a romance.

In Writing Fiction, Janet Burroway says that: "Conflict, tension and drama in dialogue are heightened when...