度过三年之痛走过七年之痒
[dù guò sān nián zhī tòng zŏu guò qī nián zhī yăng]
Three years of pain, seven years of itching: This alludes to phases and challenges within a romantic relationship, 'three years of pain' symbolizing tough beginnings while 'seven years of itching' suggests reaching a period marked by habitual comfort which needs new passion. Hence this nickname implies experience of various stages along journey of love, growth through different difficulties or transitions