Hello, a positive HBsAg means that you have been infected with the hepatitis B virus. If you had no clinical syndrome and no laboratory findings (besides the HBsAg of course) then there s no immediate danger. As your doctor already suggested a repeat measurement after six months will prove chronic hepatitis. If the rest of your laboratory findings suggest a chronic active hepatitis B then treatment is indicated and bears a good chance of success. Of course you can get married, you just have to follow your doctor s advice to avoid getting your future wife infected too (and your kids). There is no need to adjust your diet, since you had no clinical syndrome, which means that the virus exists in your body but it hasn t (yet) caused any problems to liver function. I hope I ve helped! Contact me again, if you d like to ask for clarifications. Kind Regards!