you don't send a friend request, you just put them on your friends list and they can add you to theirs if they want for adding them as a friend there is a green button at the top of a person (besides your own) profile that says add friend to find a friend you can search for them by username by like so armorgames.com/user/UserNameHere and if you put a valid user name in the UserNameHere part then it will take you to their profile
for more information and for the information that i just gave you you can click this link
