However, if there is only one possible source of infection, that person should be contacted no matter how long
it has been since the last
exposure. In other words, your regular partner needs treatment (preferably with examination and testing) no matter how long it has been.
3) Anybody with any STD should be routinely tested for gonorrhea (already done), syphilis, and HIV. Testing for herpes is optional but not usually done in this sort of situation.