This is super unhealthy, your perception of needing him for oxygen will likely lead to a lot of trouble in the future.

I suggest you try HARDER to tone it down, no doubt that once your bf realizes just how badly you think you need him, he will no longer be flattered by your neediness and probably feel suffocated.

You will inevitably be putting an immense amount of pressure on him because you hold him responsible for your very life, and no doubt your happiness.

He deserves to be loved by you, not being obsessed over and possibly stalked whether now or in the near future. Obsessions are never healthy, they are the very opposite of healthy.

Remember this, the tighter you grip, the faster they run.