I am diagnosed with syphilis but my boyfriend of 3 years never had any symptoms. He is also the only partner ive ever had. I know he never cheated on me or has never had sexual contact with anybody else during the whole 3years. Is it possible he has it and got it from an ex before we were together and passed it to me? We are both under treatment now but im just curious if he really has it as i can only get the infection from him. He is really puzzled as well since its been a long time since his last sexual partner before me and he never recalls any symptoms.