How to have all the messages of a users

Hello

I'm trying to make a view to display all the messages for a certain user.

A is the user that I want to show.
A want to enter in relation with B
C want to enter in relation with A
B approve A and A approve C

In the flag_friend table I've got two new fields

uid | friend_uid | created
B           A        date
A           C        date

And in the Activity table I've got :

aid | uid |    op    |     type     | nid | created
ID     B     approve    falg_friend   null    date
ID     A     approve    falg_friend   null    date

I created a view based on the default activity view.
I've just added an argument, to pass the Id of the user that I want to display.

When I display my view the only thing that i see is : "A know C" and I didn't see "B know A"

Where am I wrong ?

I didn't find how to check the activity messages of my friend.