Thanks for the imply.
I still think it´s a girl though
While 'Je suis une amie' does mean 'I am a (female) friend', it can also mean 'I follow a (female) friend'.
Although I believe that 'A' is a girl, the title's ambiguous meaning does not necessarily imply that 'A' is indeed a girl.
Pretty Little Liars All-Day Marathon Feb 21 on ABC Family
[...] Episode #111 “Moments Later” (1:00PM – 2:00PM) – Aria, Emily, Hanna, Spencer and those around them must deal with the aftermath of what happened in Rosewood, PA one mysterious night. [...]
AAAAA: It's so cute how you came on this site thinking you were so much smarter then everyone else. You thought you'd spoil it for those who like the suspense and be the hero of those who wanted to know what would happen next. But, while Mona, Courtney, and Ali all play a part in the tv version, all you've done is spoil the end of the books. And the show has stated many times that the show will have a different outcome from the books. So congrats, you haven't spoiled the show; only spent your time writing spoilers for a largely irrelevant book ending.
Hannah doesn't die. she knows the number because it is Mona's. she knows that Mona is A. Later A is Ali. Ali had a twin sister called Courtney. Courtney always pretended to be Ali and one day tried to kill her so her parents sent her to a mental hospital. Courtney had to change hospital and was home one weekend because her new hospital was not ready for her. Ali and Courtney were identical and the only way her parents could tell them apart was by there rings with A and C on Courtney swapped the rings while Ali was sleeping. So the Real Ali ended up going to the Hospital. One day she escaped and then killed Ali at the 7th grade sleepover.