You’re not wrong and I’m dealing with the same thing. If he’s denying it to you, it’s because he’s then denying it to himself to make himself think that he hasnt got a problem.
My fiancé started vaping it about a year ago and broke down to me a couple of months as he had got himself into £50k of debt by doing it. I do honestly believe that they won’t change unless they want to.
My fiancé has just relapsed after 7 months clean and I’m gutted….
How much does he usually smoke? Does he exercise or is there anything you could do to take him away from it? I find that if I put chores in place or convince him to go running with me then that takes his mind off doing it. Also, he plays on his Xbox to keep his mind busy too