How to Create a friend request system/Users system??

[eluser]flyenig[/eluser]
Hello

well I'm trying to create some type of friend request system, or friends ssystem, or users system or profile system,(what ever u want to call it :-P).

for example...(send friend request, accept friend request, block user, send comment, messaging between friends, etc)

Ive looked almost everywhere and i cant seem to find a tutorial.

Any help would be appreciated.

thank you