Balancing Seperatness and Togetherness

I am 37-He is 39-my(our)Son is 14.

SO of 7 years has been very dishonest and deceitful past 4 months. Drug use, secrets, lying, selfish attitude, short tempered, trying to play the victim. I'm trying to be forgiving, loving, understanding, and looking within myself for peace, happiness and personal growth. But NOW, he is starting an Amazon seller store, and wants me to have absolutely no part in it. It's MY house. The boxes of product stored everywhere, he's taking over the office. He doesn't pay anything for mortgage or utilities. He only pays for phones, internet and TV and half of groceries. Which all have been shut off or suspended due to non payment for last 4 months. I offer my help, advice, I research for him and help pack and deliver products for shipping, but yet he still acts and behaves at it is ALL HIS. All responsibility, money and time invested ,profit and fail. That this is HIS project. HIS million $ empire HE is trying to build. I have expressed my feelings to him multiple times and reminded him that whatever happens to him or what he's going through is also happening to US (me and our son). That we are a Family, a Team, Life Partners. He still refuses. He is still so selfish and self-centered. I'm scared. I want to start protecting myself, my son, and our future, and I realize that feeling that way is the beginning of the end. Am I being selfish and unreasonable? Is there safety and positivity for our future together in letting him have this for himself? Do I have reason to worry? Or do i let him continue his separate 2nd life, and leave him to move on and start over with my own life with my son. What has your life experiences taught you? What do you think?

-- Confused & Scared