查了查字典intimate用在这里好像也行。

看到这个：

5 : very closely related or connected : very close
▪ There is an intimate connection/relationship between diet and health.

但是和人之间的关系，一说intimate，我联系到的是男女之间的：

3 : involving sex or sexual relations
▪ They are in an intimate and committed relationship. ▪ He denies that they were ever intimate. = He denies that he was ever intimate with her. [=that he ever had sexual relations with her]