I have been with my boyfriend for 3 years. After we were together about a month he started having this problem. He would ejaculate very soon and couldnt finish the job because of the burning in his penis. Ever since then he has still had this problem. Sometimes hae can last ten minutes before this happens but usually it is only one or two minutes then we are done for the night. It hurts him for a few minutes after that then he is fine. What should he do? Been tested no STDs! Does he have a medical problem? Is it serious? He is only 19. Please help.