Klm, have you talked to him about counseling? If he's just starting a pattern, maybe a counselor can teach him coping skills so he can learn a healthy pattern instead of a destructive one in times of emotional crisis. It sounds like you're taking the right steps for yourself, and he's close to you, so if you're in counseling and mention it in your conversations, he might just get the hint.
I'm glad you're taking care of yourself. Hugs.