lover是名词，是指情人、爱好者、情侣、热爱者等。Love作为名词时，有爱、热爱、慈爱、爱情、恋爱、喜好、喜爱等意思，Love作为动词时，有爱、热爱、喜欢、喜爱、很喜欢、很愿意等意思。love加上r就从动词变成了名词，这样的例子有：dive——diver、dance——dancer、drive——driver等。
例句
He denied that he was her lover.他否认是她的情夫。We were lovers for several years.我们相爱了好几年。The park was full of young lovers holding hands.公园里有许多手拉着手的年轻情侣。
Every Thursday she would meet her lover Leon...每周四她都会和情人利昂幽会。She is a great lover of horses and horse racing...她热爱马匹和赛马。His new novel is a must for all lovers of crime fiction.他的新作是所有犯罪小说爱好者的必读书。
The photos showed her cavorting on the beach with her new lover.这些照片展现了她和新情人在海滩上放荡嬉戏的情景。She lied to her husband so she could meet her lover.她对丈夫撒了谎，好与情人幽会。