Instead of the friend message, maybe when you message people, you could separate the username with a comma to show that you want to send it to more than one person. (/message LovelyBones_, AaronXxXx, LemonHowlter)
My past names
owlgal - since beginning (2013 I think?) - The name most people know me as
Steam_Dragon - since 2/16/2016
owlgal - 4/10/2016
LovelyBones_ - 2/24/2017