Platonic is non-sexual. For the rest of the details please kindly refer to wikipedia or a dictionary:chai:
That is nice to know, par apni biwi ko bhi behn ka pyar na dena warna bohat jootiyan parney wali hain:cb:
Par why would you not want them to know that you care about them? If some friend is close to me I would definitely want her to know and would want to know about her well being etc.