I've been trying to decide if I'm overreacting about this or not.
FI and I were both married to other people, and he used to smoke. I have smoked in high school and college but was never hooked. He told me he smoked for 6 years.
Fast forward to two years ago, when he and I met and started dating. He told me he didn't smoke anymore, and I told him I didn't like the smell because it's a migraine trigger. A couple of times he still smoked behind my back. He tried to cover it up, but I could smell it.
Over the past two years I've told him why I don't like smoking. Besides it being a migraine trigger, I told him that I don't want to see him do anything to harm his body, which I dont. I've told him that I want him to live as long as he can, so he can be a husband to me, and a father to his kids for as long as possible.
Fast forward to last night. He had a cigarette. Again, he tried to cover it up, but I smelled it on his breath. He says he has a lot of stress, and that he sometimes likes to smoke as a stress reliever. If he hadn't been hooked once before, I think I would handle it better. I'm afraid that it'll start out as "once in a while" and escalate from there. I told him that's like a former alcoholic saying that they'll have just one glass of wine. It'll start out that way and then they'll be buying kegs.
He thinks I'm controlling him by not wanting him to smoke. He's known the whole time how I feel about this. It's also hitting really hard now because both of my parents have cancer (not from smoking). My father was just diagnosed with cancer LAST WEEK!
I hope he can find another stress outlet that doesn't involve him hurting both his body and our relationship. Am I being too controlling over this?

