Talk:Hush, Hush, Sweet Liars/@comment-16831842-20160402221006/@comment-5660329-20160403002911

Not to be rude, but if you watch the show we learned why they hated each other several seasons ago.

Mona wanted to be friends with Alison, who thought she was a loser, and Alison bullied Mona calling her "Loser Mona" and many other names. Because of the bullying, Mona hated Alison. In a bonus scene, Alison realized that her being mean led to A appearing and led to her being in prison and if she could do it all over, she would help Mona change her appearance (https://www.youtube.com/watch?v=Uwq0YZONmr0) ; they definitely could have been friends if Alison had just been nicer.