Can i friend on offline IRL friend

You'll send them a friend request and they will get a notification to accept when they log in.

At the bottom of the Friends List, click "Add Friend" http://i.gyazo.com/91ca41a1107cc729d13d1d163832c061.png

Then type in their summoner name. http://i.gyazo.com/8cc74212764058480ab8292fe7509adc.png

You can also use the Facebook Friend Finder if you are both connected to it. http://i.gyazo.com/32f4995f2c0d70a9b911ac4dfe249afd.png

thank you