A word of condolence from someone who has been on the smoking end of the twosome...don't feel responsible for any end outcome of his smoking. You have neither control nor blame in his situation. The only person hurting is you, and YOU are the only one who can stop YOUR hurt. That is one part of the equation over which you have FULL control. Grab the reins and pull this buggy of blame and guilt to a stop!!
It won't stop his tobacco use, but it might keep you out of the hospital with ulcers and GI bleed!!
Much love from an exsmoker who stopped because she got a knife to her throat, and only then!!!
Andrea