[client] All of my friends got removed and I can't seem to add any [client]

So today I logged into my account and I didn't have any friends. Minutes after my friend said "log into league." But of course, I was already logged in! I tried to add him and it said that I sent a friend request, but he didn't get any, since I was already his friend but he wasn't my friend. Does that make any sense?

I've tried to restart league three times and also restart my computer once, but nope.

So, while I'm reporting this, it worked, I got my friends back! http://prntscr.com/6pdupb . But I still wanna report this bug since you GOT TO fix this, Riot. Or I'll call you Rito for the rest of my life... :K

//Roger