I am so sorry that this had to happen. Right now you need to do whatever is best for you. Perhaps being in that toxic environment was being detrimental to your health as well as theirs. I hope that now you can go further on towards your healing proccess. Perhaps this is exactly what your parents need in order to heal themselves. Whatever happens, know that you did not deserve this. Home is supposed to be your soft place to fall. You and your bf need to make your home a plce where youcan do that.
I am sending you a wish for strength in this trying time. KNow that I am here for you. You can pm me at any time.
Tracy