Uhmmmm, Moiraine and Siuan were pillow friends. Elaida was a pillow friend with a minor character as well. Pillow friends in WoT was a hidden way of showing lgbtq tendencies. When you get down to it and really analyze the books, there is quite a bit of eluding to lgbtq tendencies. ( by referencing lgbtq, I mainly mean gay, but wouldn't surprise me if there was some Transgebder stuff too, but I don't remember it.)