Earlier in life I dated a smoker and she tasted like an ashtray. Later I dated another smoker and I didn't know she smoked. But since I can't be around smoke too much as I have asthma, a smoker won't work for me long term. Both girls were very nice and we got along great but statistics show they will be unable to quit. So I had to end it.
I can't tell you what is right for you. You can try it but quitting smoking is very difficult, the addiction is strong as cocaine. Most people never quit smoking. So why get involved if you are going to leave them anyway? These are things you need to think about.
I have a long time interest in psychology, specializing in relationship dynamics for 30 years.
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