I just saw this thread and read it through. Wow.
The needing more space issue is what it is, it needs to be addressed for two growing boys.
The relationship? I do agree with the comment that if the game is where he has a relationship, it may be time to get some space from him. He may have a decision to make regarding addiction and his life.

Humlan,
You need to "feel," this one with your heart and give your heart time to be clear. However you connect with your heart, it knows what is right. It's really not a matter of what we think about your love for him, it's what you feel. I have read a LOT of "thinking" but you, and only you, can feel this one through.
Take your time and follow your heart.
I am an Italian artist. Say no more there, right? I would tell you what I am telling you. We love, or should, from our heart, and our heart only loves when it is loved back or we are not loving, we are yearning. So ~ whenever you get in touch with your heart, your deep feelings and if you feel loved, and loving, you know what to do. Yearning is not love and is no life for anyone. If we are yearning, we are not in reality, we are in fantasy.

What does your heart say? Find it and let it answer. You have nothing but time, really

Dancer9