Please tell me, could i get my boyfriend to quit smoking?

Sometimes: Most people don't stop an addiction, whether cigarettes or heroin, because people tell them to. However, if you tell him that you want him to live longer and healthier, and that it is not "sexy" making out with an ashtray, sometimes that helps motivate. You can certainly insist you don't want to be exposed to second hand smoke and he not smoke in your presence. Get pamphlets from local programs!

He has to want it: He has to want to quit smoking, and get help for it by any means necessary. All you can do is encourage and support. You cannot do it for him.