Lol as invini said he is friendless..
Here ill show you how to add/send request to be a friend with someone;
First you go to someones profile which you want to invite.
Then,
as you see on the picture
you need to click on ; Add to friendlist.
Then you will see this;
Just go to friend and foes and you will see this. Then you could add someone to your friendlist. Atleast it says add but you send a request tho^^
too simple :d but hard if your friendless and want to invite friends :d