<human>: Smoking is something that has never bothered me, I'm not a smoker myself and have even enjoyed the smell in the past.

But the longer I'm with my partner, the more I realise that I don't want to be without him & the more I fall in love with him, the more I panic about him smoking due to all the health side effects.

I have issues with anxiety which doesn't help at all.

I'm not going to ask him to quit as that isn't fair on him, it's an addiction and quitting at some point should be his own choice.

I feel uneasy talking to him about it (otherwise our communication is open and amazing) because I don't want to accidentally manipulate him.

But I can't handle waking up in the middle of the night suddenly crying at the thought of him slowly dying from cancer or some other horrible disease. 

Any advice on how to manage the anxiety would be hugely appreciated.

Can you condense the text into a few key points?
<bot>: Panicking about partner dying from cigarette induced cancer, anxiety is a bitch, don't feel comfortable talking to him about it because I don't want to be manipulative. Plz send help.