主角（Thora Birch）遵循"PIG理论"，在六个月后结束关系，以避免心痛，直到她遇到一个想反驳她理论的男人（克里斯·克莱因）
The main character (Thora Birch) follows the "PIG Theory" and ends relationships after six months in order to avoid heartache until she meets a man (Chris Klein) who wants to disprove her theory
