If you are right for each other you can work past a sexually transmitted disease. Its not a nice thing to have, catch or give someone but its not a huge deal, you can get it treated (in most cases).
You should really, really think about protecting yourself better, I seriously cannot believe that anyone would entertain having sex with a new partner without using a condom, hopefully this is a sorry lesson you have learned.
Boys are very protective about their willies and if you have passed something on I bet he isnt going to be impressed but his immediate reaction is going to be to pass the blame onto you. Are you certain he had a test before? He could just be saying that so you take the fall. At least you are sorting your sexual health out.