One rule about sobriety is not to enter any relationships for the first year—platonic and romantic alike—the thing about addicts is, we adapt. When one fix is taken away, we find another. Trading substance addiction for love happens often. Being sober blends into being with them. If they leave, your reason for being clean is gone.

When you get sent to rehab and see your roommate, you know you're doomed.

"This is Natalie, your new roommate." The nurse says as she leads you into the room.