Pretty Little Liars

Ok, so for all of you who are obsessed with Pretty Little Liars. I guess you are just dying to know who A is. So here is some clues:
Jenna shouted at Aria (Who pretended to be a girl called Anita) to blow out a candle and the lights were off , it was pitch black, so Jenna could have killed Aria because Jenna can see.
Spencer took Melissa's wedding ring to the seller shop because Ian fell out the bell tower, later A (Alison's killer) bought the ring (it has got to be for someone who has a girlfriend or a boyfriend, or it could be Mona giving it as a best friends present).
When Ali and the girls threw a bomb in to a house, Jenna was in the house and she lost her eye sight.
A threatens to share the girl secrets and Aria is the only one who knows all of the secrets.
A is the beggining letter for Alison and Aria.