fall in love with sb 动词词组。
与某人恋爱或者爱上某人 be in love with sb 状态，和某人恋爱~1、表示两性关系，强调情感因素。 His relationship with Mary went through four stages. 他与玛丽的关系经历了四个阶段。
2、表示关联性。 There is a relationship between mental and physical health. 心理和生理健康之间存在着关联性。
3、表示有关联的关系 We have renewed our friendly relationship with Western countries. 我们与西方国家已重建友好关系。
4、Tell me all about yourself in an email if only you are interested in a relationship and send it to my address. 如果你只对谈恋爱感兴趣就在邮件中告诉我你的信息并发送给我。 这句话中的a relationship是特指谈恋爱。