Has anyone who never smoked/never exposed to second hand smoke get lung cancer?

Yes: Not all lung cancer is due to smoke exposure. Other causes include radon exposure, asbestos exposure, etc.

Yes: Incidence of lung cancers in non smokers is very low. The great majority of lung cancers are smoking related. In my own practice of over 900 lung cancers I have cared for, 5 patients never smoked or were continuously exposed to cigarette smoke. One patient was 23y/o when treated.

Yes, unfortunately: Not all people who have lung cancer are smokers. 99% of small cell lung cancer patients are smokers. However, the incidence of people who are non smoker to get non small cell lung cancer is higher.