Jason I am sorry for what brings you here. It hurts like h*ll that she would turn and start a new relationship. Even if she changes her mind about this new person, and returns to your life, the nightmare won't be over. You saw how she escalated after her return from rehab. I don't wish that on you, living with her again while she fights addiction. Read as much as you can about alcoholism and try out Al Anon. It will bring you some peace, which you really, really need right now. Practice self-care. These are the things you CAN control, so you better deal with all of this.