princesshaseena, you can find out more info from s'pore imigration. i think it's not possible for him to get citizenship before he marries you, but PR is most likely. cos i'm a foreigner myself and i had ask around on these, and what i know is a foreigner must marry a local, work and earn a certain amount of income and stay in s'pore for a few years then can gain citizenship. guess it's easier for me cos my bf is a local, once i get married to him and have kids here i can get my citizenship. but my husband is required to have a certain amount of income too to make sure he's able to support me. what the goverment is trying to imply to foreigners is if you want to stay in s'pore you must make sure you have a job or someone to support you and not be burden to them.
hope it helps